Question

Nathan Heinz, __________ many consider a highly skilled vaulter, will be competing today.

Answer 1

The correct answer is,whom

Answer 2

Answer:

The answer to your question would be that the personal pronoun that completes the sentence is the following one: Who.

Explanation:

The sentence above is an example of a nonessential relative clause. You can tell this by looking at the punctuation: The type of clause introduced by the missing personal pronoun is a nonessential one as it is separated from the rest of the sentence by means of the comma. What is more, you use the pronoun who to refer to people and it can be either the subject or object of the clause. Whose is used to indicate possession, whom as the object of a preposition or verb and whoever is an indefinite relative pronoun.