Which statement is true about a complement in grammar?
a. It must be part of a prepositional phrase.
b. It is an adverb that modifies an action verb.
c. It helps to complete the meaning of a verb.
d. It is always located before the linking verb in a sentence.
The correct answer is c: it helps ( or actually, might be necessary) to complete the meaning of a verb. For example, I call you the boss- the boss is the complement here.