Answer:
2. It is about changes over time in the Quino Checkerspot butterfly population.
Explanation:
BEGAN IS THE VERB THE USE IN THE FOLLOWING SENTENCE
An infinitive composes the words "to" plus the "simple verb". Infinitives can be used as nouns, adjectives or even adverbs. In the given sentence above, the part of the sentence that contains an infinitive is, "to enrich". The infinitive "to enrich" is used as an adverb in the sentence modifying the verb
"decided".
