Answer:
D. Very
Step-by-step explanation:
Remember that an adjective is a word that describes the qualities or states of being nouns, in other words, they modify nouns. In this case the only adjective I found is small, it describes the noun pots.
Next to small we can find the word very, this is an adverb. An adverb is a word that modifies or describes a verb, and adjective, or another adverb. In this case it is modifying the adjective small.