The simile of Lines 18 through 23 compares the storm clouds that whip across the sky from the horizon to the zenith to: locks of hair of a frenzied woman. (Ode to the West Wind).
Answer:
Answer: If the choices of this question are a,cy,ex,ic,inter,ful and im, the answer would be "a". Affix is an element that is added to a word to form a new word; it is sometimes classified as prefix and suffix. The affix word "a" is considered as without because it means absence.19
Explanation:

In the English language, the word "who" is almost always used as a pronoun.
It represents a person, similar to the words "I" and "me".
What’s the verb in the sentence, “comets have been studied for many years”
Your answer is the word “studied”