The correct answer is: C. are flying
The verb “to fly” is an action verb, which means that it describes an action that is happening. In this case, the action is “flying,” which is something that kites do. The other options are not action verbs. “Are” is a linking verb, which means that it links the subject of the sentence (in this case, “kites”) to its predicate (in this case, “flying”). “Have” is a helping verb, which means that it helps the main verb (in this case, “fly”) to express its meaning.
Here are some examples of how the other options could be used in a sentence:
- The kites are flying in the sky.
- The kites have flown away.
- The kites are flying high in the sky.
- The kites are flying low over the ground.
I hope this helps!