Introduction.
A book's introduction is closely related to the content of the book itself. Usually found in nonfiction work, the introduction may summarize the main argument presented in the rest of the book, define any important terms, or fill in background details.
Possessive common nouns are common nouns or pronouns that own other nouns. Apostrophes are used to indicate this possession. Example: I will not hide the teacher's glasses.
Answer: 3, "We are going depleting in the mountains this weekend'
Explanation: Depleting means "diminish in number or quantity'. It would make no sense to use that in this particular instance.
I think it’s the second one