Question

Fill in the blank with the most appropriate word.
She heard a sound _________ brought her heart into her mouth.

• A. what
• B. who
• C. whenever
• D. which

Answer 1

The correct option is D which

Relative pronouns have two functions- Like other pronouns they stand for a noun or pronoun placed before them and like conjunctions they join subclauses with main clause and start the adjective clause.

In the given sentence the subject is "the sound".

"Who" is always used to set up a relative clause that describes a person, while "which" is used to describe an object or another non-human being.

"What" is also used to refer to things also but it is used when the antecedent is understood.

'Whenever' is a compound relative which is used to indicate an unspecified time.

Thus option D is the correct answer. Options A,B,C are incorrect.