Question

select the correct answer from the drop-down menu.
which word(s) tell(s) who or what?
signed a check for the work.

Explanation:

The part of a sentence that answers "WHO" or "WHAT" is the subject, which identifies the doer of the action. In this sentence, we need a noun/noun phrase that tells who performed the action "signed a check for the work". A common correct subject here would be a noun like "The contractor" (or any specific person/entity that would sign a work check), as it directly answers who completed the action.

Answer:

An example correct answer: The contractor signed a check for the work.
(Note: Any valid noun/noun phrase that clearly answers "WHO" can be used, e.g., "My boss", "The client")