I believe the answer is shrewd as it is an adjective and could describe someone as being wise or a know-it-all.
Answer:
The correct option is c) shrewd
Explanation:
An adjective is a part of speech, also known as word class, that modifies a noun or a pronoun. In general, such modification consists of providing additional information about another word or word group.
Bearing the above in mind, it could be said that, from the options provided, the word which is an adjective that can be used to make a sentence more descriptive is option c) shrewd.
