The correct answer seems to be number four - not enough. It both suits grammatically, and sentence-wisely.
Choose the verbs in the sentence. There are only three of them in this
sentence. Only one of the verbs has a modifier that describes the verb.
That word is your adverb.
Answer that modifies a verb would be " instantly."
<span>C. animal
Yeats, in this poem, uses an animal (swans) to represent the way time passes and changes, and the natural beauty of that cycle. He sees the swans year after year but knows that one day, even the swans will disappear from the lake.</span>
The answer here would be D.
The claim is the statement (Stating something), which can be backed by beliefs (or here, reasons) or facts (or here, evidence.)