What is the best way to describe "sometimes" in the following sentence? "She sometimes returns her books late." A. A when adverb modifying a verb
B. A how often adverb modifying a verb
C. A how often adverb modifying an adverb
D. A when adverb modifying an adverb

B)  how often adverb modifying a verb

Explanation:

In the sentence, "She sometimes returns her books late." the adverb "sometimes" describes how often the "verb" happens so it is rightful to say that the adverb talks about the frequency of the action. On the other hand, the other choices provided are inappropriate to describe the scenario and the construction of the sentence.

the correct answer would b,   to show that she was very influential in the democratic party.