The population density of Haryana, according to the 2011 Census, is 573 persons per square kilometer. This value is a measure of how many people live within a square kilometer of land area in the state. Population density is a significant indicator used to understand the level of crowding, resources, and infrastructure demands in a region. For Haryana, this means that, on average, there are 573 people living in each square kilometer of its total area.

When comparing this to the previous census data from 2001, Haryana saw an increase of 95 persons per square kilometer, as the population density was 478 persons per square kilometer in 2001. This increase indicates rapid population growth in the state, driven by factors such as migration, better healthcare, and improved living standards. The rise in population density reflects the growing urbanization in the state, especially in districts like Faridabad and Gurugram.

Haryana is the 21st largest state in India in terms of area, but it ranks 11th in terms of population density. This suggests that while Haryana has a large area, its population is growing at a faster rate than many other states. The state's proximity to the National Capital Region (NCR) has also contributed to the rise in population density as people from neighboring states migrate to Haryana for better employment opportunities, education, and infrastructure.

The increase in population density has led to challenges in managing resources such as water, electricity, and transportation. Overcrowding in urban areas has led to a strain on social services, housing, and public infrastructure. However, it also presents opportunities for economic growth, especially in areas like real estate, industries, and services. Overall, Haryana's population density reflects both the state's development and the pressures of urbanization and population growth.

Hence Option B is Correct.

In 2011, Gurugram had a population density of 1204 persons per square kilometer, making it one of the most densely populated districts in Haryana. Gurugram, located in the southern part of Haryana, is part of the National Capital Region (NCR) and has experienced rapid urbanization over the past few decades. The city's proximity to Delhi, along with its growing infrastructure and economic opportunities, has led to a significant increase in its population density, as people from across the country have migrated here in search of better job prospects and quality of life.

Gurugram is a major commercial and financial hub, home to many multinational corporations, IT companies, and business parks. The rapid growth of the service sector, along with a thriving real estate market, has attracted professionals, entrepreneurs, and workers from various fields, contributing to its high population density. The availability of better amenities, education, healthcare, and transportation has further added to the district's appeal, leading to an influx of residents from both rural areas and other urban centers.

In addition to its economic growth, Gurugram's population density is also a result of its role as a residential area for people working in Delhi and other nearby cities. The city's modern infrastructure, including shopping malls, hotels, and recreational spaces, has made it a desirable place to live. However, the rapid growth has also posed challenges, such as strain on infrastructure, housing shortages, and traffic congestion. As more people move to the district, the demand for housing and basic services continues to rise, putting pressure on the local government to meet the needs of the expanding population.

Despite these challenges, Gurugram’s high population density also reflects its development and importance within Haryana and the NCR. The district's economic activities, including the booming IT and real estate sectors, make it a key driver of Haryana's economy. It continues to be a symbol of urban growth and modernization, and its population density of 1204 persons per square kilometer showcases the region's ongoing transformation into one of the most urbanized and economically vibrant areas in the state.

Hence Option B is Correct.

According to the provided data, Bhiwani is the district in Haryana with the largest area. Bhiwani spans an area of 4,983 square kilometers, making it the largest district in terms of land area in the state. This district is located in the southern part of Haryana and is known for its agricultural activities. The vast area of Bhiwani contributes significantly to the state's rural landscape, with farming and livestock breeding being the primary sources of livelihood for its residents.

Bhiwani's large area plays a critical role in the district’s economy and its population distribution. While the area is expansive, its population density is relatively lower compared to more urbanized districts like Faridabad or Gurugram. In 2011, the population density of Bhiwani was 342 persons per square kilometer, reflecting the district's rural nature. The spread-out population means that land resources are not as strained as in densely populated urban districts, allowing for more agricultural and industrial development over time.

The vastness of Bhiwani also means that the district has a diverse range of ecosystems, from agricultural fields to semi-desert areas, making it rich in both flora and fauna. This geographical diversity is advantageous for farming, especially for crops like wheat, mustard, and cotton, which are majorly grown in the region. The large area also allows for the cultivation of various other crops, making it one of the key agricultural hubs in Haryana.

In addition to agriculture, the district's large size gives it potential for infrastructure development and urbanization. However, like many rural districts, Bhiwani faces challenges related to providing adequate social services such as healthcare, education, and transportation across its vast area. Despite these challenges, Bhiwani's size provides opportunities for balanced development, with a strong focus on both rural and urban growth. The district remains an important part of Haryana’s cultural and economic fabric.

Hence Option B is Correct.