Choose the option which best expresses the meaning of the given word.
COTERIE
a) Mob
b) Group
c) Family
d) Institution

Hint: Synonyms are words or phrases that mean exactly or nearly the same as another word or phrase. For example- ‘sad’ and ‘depressed’.
Two words that can be interchanged in a context are said to be synonymous relative to that context.

Complete answer:
In the given question, the word ‘coterie’ refers to an exclusive circle of people with a common purpose.
Let us analyze the options given to us in this question:
Option (a.), 'mob', refers to a disorderly crowd of people.
Therefore, option (a.) is incorrect as its meaning is not synonymous with that of the given word ‘coterie’.

Option (b.), ‘group', refers to any number of entities (members) considered as a unit, who have shared interests or purposes.
Therefore, option (b.) is correct as its meaning is synonymous to that of the given word ‘coterie’, since groups are often not inclusive to outside people.

Option (c.), ‘family', refers to a social unit living together.
Therefore, option (c.) is incorrect as its meaning is not synonymous with that of the given word ‘coterie’.

Option (d.), ‘institution', refers to an organization founded and united for a specific purpose.
Therefore, option (d.) is incorrect as its meaning is not synonymous with that of the given word ‘coterie’.

Note:
If you don’t know the definition of the given word and have only used it in some given context previously, then use the given word in a sentence. Substitute the given word with each word in the options and choose the word which does not conflict with the context provided by the given word.