Identify the verb from the given statement

A kite is flying in the sky.

Option A is the correct answer because flying is an action word that is a verb. Doing or actions words are called verbs. The base form of the verb is fly and in the given statement is a helping verb. Option B is wrong because the kite is the name of a thing. It is not an action word . Option C is also wrong because the sky is explaining the object.