Pronouns: are words that can replace a noun in a sentence. Their role in a sentence is similar to that of a noun. The noun that is replaced by any pronoun is called its antecedent. For Example

Maya is a good girl. She is very attentive in the class.

Here She is pronoun as it replaces the noun Maya.

This statement is an example of personal pronoun .

Personal Pronoun:  Personal pronouns that refer to the association with a particular person or noun. There are two types of personal pronouns.

Subject Personal Pronouns: They refer to the subject of a sentence. For example : we, you, I, he, she etc. They are also called pronouns of the nominative case.

Object Personal Pronouns: They refer to the object of a sentence. For example : me, us, her, them etc. They are also called pronouns of the objective case.

In the question : -

Amit is a good student. _____ is very sincere in the class.

The correct pronoun that can be placed in the blank part is He .

Other Usage : - She is working with a Microsoft company.

Option B : - She : - (used as a gender neutral, third-person, singular pronoun)  She is very intelligent girl .

Option C : - They :- (referring to a generic person whose gender is unknown) They like our play .

Option D : - It : - (refer to things) It is a ball .

Thus , the Correct Option is A , which is He .

Pronouns: are words that can replace a noun in a sentence. Their role in a sentence is similar to that of a noun. The noun that is replaced by any pronoun is called its antecedent. For Example

Rohan is a good student. He is very attentive in the class.

Here He is pronoun as it replaces the noun Rohan.

Personal Pronoun:  Personal pronouns that refer to the association with a particular person or noun. There are two types of personal pronouns.

Subject Personal Pronouns: They refer to the subject of a sentence. For example : we, you, I, he, she etc. They are also called pronouns of the nominative case.

Object Personal Prononuns: They refer to the object of a sentence. For example : me, us, her, them etc. They are also called pronouns of the objective case.

Use of Personal Pronoun:

• They should agree in number, gender and person with the noun that they replace.
• When they are used for collective noun, it should be singular in number and of neuter gender.
• When they are used for collective noun, where each individual is considered separate they are used in plural.

In the question : -

1.You are the fastest runner on the team, and we are depending on you.

2. All of my teachers are Americans. They come from all over the country. .

Thus , the Correct Option is C , which is 1. You, we, you 2. my, they

Pronouns: are words that can replace a noun in a sentence. Their role in a sentence is similar to that of a noun. The noun that is replaced by any pronoun is called its antecedent. For Example

Rohan is a good student. He is very attentive in the class.

Here He is pronoun as it replaces the noun Rohan.

Personal Pronoun:  Personal pronouns that refer to the association with a particular person or noun. There are two types of personal pronouns.

Subject Personal Pronouns: They refer to the subject of a sentence. For example : we, you, I, he, she etc. They are also called pronouns of the nominative case.

Object Personal Prononuns: They refer to the object of a sentence. For example : me, us, her, them etc. They are also called pronouns of the objective case.

Use of Personal Pronoun:

• They should agree in number, gender and person with the noun that they replace.
• When they are used for collective noun, it should be singular in number and of neuter gender.
• When they are used for collective noun, where each individual is considered separate they are used in plural.

In the question : -

Ben was surprising when he  discovered that his friends were hiding in living room.

Thus , the Correct Option is B , which is he