3. What is Buck's reply when William asks “why are you here?”

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.

that is true because that is something they fulfill for their work.

actually the answer would be c.) jane addams worked hard to improve the lives of less fortunate people.

in the section of speech is not