<span>Exposing a plant to a higher light intensity is the answer.
HOPE I COULD HELP!</span>
I think the correct answer is C. The pronoun was used as the predicate nominative of the sentence. The predicate nominative is a pronoun or a noun which is next to a verb and it describes or renames the subject. It usually follows a linking verb or a verb phrase. For this case, it is followed by the verb phrase "was".
Answer:
sana all hahhahahahhahahaahaha
