Answer:
D what is or what is happening
Step-by-step explanation:
The predicate of a sentence indicates what is or what is happening. The predicate is the part of the sentence or clause that tells us what the subject does or is. In other words, the predicate is everything that is not the subject. Therefore, in order to identify the predicate, you should first identify the subject. Ask the following question: who/what verb(ed) ? The answer to that question is the subject of the sentence. For instance,
A) Mary bought a car yesterday
Who bought a car yesterday? The answer to this question is "Mary". The NP "Mary" is the subject of the sentence, making the VP "bought a car yesterday" the predicate.