Answer:
As it is not stated which word is it (not underlined), I'll go ahead and give you the answer for each one of your options:
A. Pronoun: <u>There aren't any pronouns in this sentence. </u>
<u>B. </u>Noun: <u>People, top monument</u>
<u>C. </u>Verb: <u>climb </u>
<u>D.</u>Adjective: Top.
Explanation:
A pronoun can be: I, you, he, she, etc... A noun is an object or a thing. A verb is an action, in this case climb is the action of this sentence. And and adjective is a description word, top is describing the noun, which is the monument. Top can also be used as a noun, depending on the context.
The answer is "who will be reading my writing?"