1. riddhi is thinking about going on a trip by so she can relax in the peace and quiet.

a. oneself
b. themselves
c. herself

2. dev was looking for poster, but it was missing from the classroom.

a. their
b. his
c. one's

3. vishwaj and aditya are going on the science olympiad trip this weekend. can't wait!

a. we
b. he
c. they

1. c. herself

2. b. his

3. C. They

Explanation:

The three sentences in the question are to be filled or completed with their respective possessive pronouns. Possessive pronouns are those words that are used to indicate the possessive nature or relation of possession of the object by the subject.

1. In the first sentence, the subject is Riddhi. The pronoun for Riddhi will be she/her. And the possessive pronoun from among the options given will be (c) herself.

2. The second sentence have Dev as the subject, whose pronoun will be he/him. Thus, the possessive pronoun for Dev will be (b) his.

3. Here, the subjects are Vishwaj and Aditya. Since they are plural, the pronun for these two will be they/ themselves/ their/ theirs. Thus, the possessive pronoun in this sentence will be (c) they.

That animals always have a habitat

Explanation: