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Sentence Correction: Relative Clauses - Choosing the Correct Relative Pronoun

Tom Waits, whose albums have been critically acclaimed, has filed several lawsuits against companies that have used his material for advertisements.

There is a possessive relationship between Tom Waits and the albums. There is a certain relative pronoun - not who - that should be used when such a relationship exists.      

What helps us identify this question as a Relative Clause question as well as identify the mistake is the following Stop Sign:

who, which, that, whose, whom

This answer choice is grammatically incorrect. The relative pronoun which can only describe non-humans whereas Tom Waits is human.

What helps us identify this question as a Relative Clause question as well as identify the mistake is the following Stop Sign:

who, which, that, whose, whom

This answer choice is grammatically incorrect. The relative pronoun that cannot follow a comma. That can only begin defining (also called restrictive) relative clauses. Tom Waits is already defined, so the relative clause that modifies it must be non-defining. Non-defining relative clauses should be separated from the rest of the sentence by a comma. As written above, that cannot follow a comma.

What helps us identify this question as a Relative Clause question as well as identify the mistake is the following Stop Sign:

who, which, that, whose, whom

This answer choice is grammatically incorrect because it uses an incorrect preposition. The correct idiom is: file a lawsuit against.

Good!

This answer choice correctly uses the possessive pronoun whose.

whose albums have been critically acclaimed, has filed several lawsuits against
who his albums have been critically acclaimed, has filed several lawsuits against
whose albums have been critically acclaimed, has filed several lawsuits to
which has albums that have been critically acclaimed, has filed several lawsuits against
that has albums that have been critically acclaimed, has filed several lawsuits against