Adjective : - An adjective is a word that generally modifies a noun or noun phrase or describes its referent. Its semantic role is to change information given by the noun .

Adjective of Quality : - An adjective which is used in the sentence to express the size, shape, and color of a person, thing, animal, or place. Descriptive adjectives are used to give more information about the noun.

Example : -  The foolish old crow tried to sing . Here , foolish old is an adjective of quality as it shows the feature of a crow .

In the question : -

1. Exam was very difficult however; bright candidates passed it easily. In this sentence , the correct adjective of quality is different as it shows the feature of exam and bright is also an adjective of quality as it shows the quality of candidates .

2. Pretty girl was very excited to visit the hilarious Disney world. In this sentence , the correct adjective of quality is pretty as it shows the quality of girl and hilarious is also an adjective of quality as it shows the feature of disney world .

3. She cried when beautiful birds flown away. In this sentence , the correct adjective of quality is beautiful as it shows the quality of birds .

Thus , the Correct option is B ,which is  Difficult , Bright  Pretty , Hilarious , Beautiful .

Adjective : - An adjective is a word that generally modifies a noun or noun phrase or describes its referent. Its semantic role is to change information given by the noun. 

Adjective of Quality : - An adjective which is used in the sentence to express the size, shape, and color of a person, thing, animal, or place An adjective which is used in the sentence to express the size, shape, and color of a person, thing, animal, or place . some words related to this are : beautiful , large , wise , honest , foolish etc .

Example : - Nina’s hair is very shining and smooth. Here , shining and smooth is an adjective of quality as it shows the quality of Nina 's hair that it is shining and smooth .

In the question : -

1. Big tears rolled down her beautiful cheeks . In this sentence , the correct adjective of quality is Big and beautiful as it is used to show the quality of cheeks that they are beautiful and tears are rolled down big .

2. Only noble people can form great nation . In this sentence , the correct adjective of quality is noble and great as it is used to show the quality of the people that they are noble and nation can be form great .

3. We had to cross a deep river . In this sentence , the correct adjective of quality is deep as it is used to show the quality of river that it is deep .

Thus , the Correct Option is B , which is  Big , Beautiful , Noble , Great , Deep .

ADJECTIVE :- Adjective are words or group of words that describes people, places or things. for example :- This is a tasty apple. In this example tasty is an adjective which tells us the quality of apple.

Adjective of Quality : - An adjective which is used in the sentence to express the size, shape, and color of a person, thing, animal, or place An adjective which is used in the sentence to express the size, shape, and color of a person, thing, animal, or place . some words related to this are : beautiful , large , wise , honest , foolish etc .

Example : - Nina’s hair is very shining and smooth. Here , shining and smooth is an adjective of quality as it shows the quality of Nina 's hair that it is shining and smooth .

 Kolkata is a large city.  Here , large is an adjective of quality as it shows the quality of city that it is large .

Rules to remember adjective of quality : -

1. When two adjectives qualify the same noun , both the adjectives should be expressed in the same degree . For example

(i) She is the most active and energetic social worker in our club .

(ii) She is both cleverer and intelligent than her sister .

2. The order of adjectives qualifying a noun ( S S A C N M)

Size Shape Age Colour Nationality Material Noun

In the question : -

Boby bought a _______shirt. In this sentence , the correct adjective of quality that can be placed in the blank part is blue as it is used to show the quality of a shirt that it is blue in color .

Thus , the Correct Option is D , which is enough .

(simple)