Sedimentary, metamorphic, magma
A. is the most sensible answer tbh, the librarian is inside a library she/he wouldn't really pay attention to kids. Books on gender roles may be in there a bit but not completely since it won't really talk about what you're trying to search for. Articles on phycology definitely isn't going to helped learn about children on the playground.
Answer:
The student picked <em><u>his or her</u></em> own backpack and ran to math class.
Explanation:
Pronouns are those words that we use to replace nouns. This is to avoid the repetition of the nouns and to make the sentence smoother and easier to understand.
In the given sentence, the main subject is "the student". Now, we cannot know what is the gender of the student but it is understood that it will be either he/ she, which makes the required pronoun include both genders. And on that note, the pronoun for the 'student' will be used in the possessive determiners (his/ her) instead of the personal pronoun (he/she) forms.
Thus, the correct answer will be "his or her".
The correct option is "Volunteering is a good way to make friends, help the community, and feel good."
Parallelism is achieved when the same grammar pattern is used when listing ideas. In this example, the parallel structures are "make friends, help the community and feel good" since they all use the same grammar structure: verb+object.
In the rest of the options, there is a break in the pattern so no parallelism is achived.
