Answer:
The word that is not an adverb is D) Two.
Step-by-step explanation:
The word "Two" can function either as an adjective modifying a noun, indicating how many of a noun there is in a sentence, and can also function as a noun.
On the other hand, adverbs function as qualifiers or modifiers of adjectives, verbs or a word group expressing different relations. In this case, "more" and "too" are adverbs that express a relation of quantity or frequency, and "perhaps" is a probability adverb.