Which word in the following sentence is the subject? The nurses went to the conference room.

The word "conference" is a noun that refers to a meeting or gathering, but it does not perform the action of the verb. Instead, it serves as part of the prepositional phrase "to the conference room," which provides additional information about the destination rather than the subject of the sentence.

"Went to" is a verb phrase indicating the action being taken. While it plays a critical role in the sentence by describing what the subject is doing, it is not the subject itself. The subject must be a noun or pronoun that indicates who is performing the action.

The word "room" is a noun referring to a physical space but does not act as the subject of the sentence. Similar to "conference," it functions within the phrase "the conference room," which describes where the action is directed rather than who is performing it.