I assume this is a multiple choice. I will give it a shot though:
"The open spaces and opportunities for independence appealed to many."
Answer:
Is your advice acted upon by your younger brother?
Explanation:
The <u><em>passive voice is the form of voice construction in grammar that shows an interest in the object that experiences the action rather than the subject of the sentence that starts/does the action</em></u>. In such construction, the subject and object are interchanged in their position, with the focus changed to the receiver of the action rather than the doer.
In the given sentence, the word "advice" is the object while the younger brother is the subject. So, the places of these words will be interchanged in the sentence, making the subject come to the end of the sentence while the other will be at the fore of the sentence.
Thus, the correct sentence in the passive voice will be-
<u>Is your advice acted upon by your younger brother?</u>
The option that identifies the context clue that would be most helpful in determining the meaning of the underlined word is remarkable no so much for...as for their senseless brutality, here we have a contrast with the use of the word as between the descriptions, senseless brutality is a negative description and since we are talking about the use of comparison the meaning of munificence has to be positive according to the context.
In fact, munificence is a positive word it is a synonym of generosity, in this way the expression remarkable no so much for...as for their senseless brutality is the clue that helps you understand the meaning of the word.
The other options are not correct because they don't have a direct connection with the specific word we want to understand.