Identify the predicate in the sentence: "The cat sleeps on the warm windowsill."

In the sentence "The cat sleeps on the warm windowsill," the predicate refers to the part of the sentence that expresses what the subject (in this case, "the cat") is doing. A predicate typically includes a verb and may also contain additional information that describes the action or state of the subject.

The correct answer, "sleeps on the warm windowsill," includes the verb "sleeps," which indicates the action taking place, and it is followed by a prepositional phrase "on the warm windowsill" that provides context about where the action occurs. This entire part effectively conveys what the subject is doing and includes necessary details to understand the action fully.

In contrast, "the cat" serves as the subject, identifying who is performing the action, but it does not describe what is happening. The phrase "on the warm windowsill" is a prepositional phrase that gives more information about the location but does not contain the verb that shows the action of the subject. Lastly, "the warm windowsill" is simply a noun phrase, naming an object in the sentence without any action. Thus, the complete predicate correctly identifies the verb and the details surrounding the action of the subject.