When do you use the past participle?

The past participle is used with the verb have (have / has / had) to create the present and past perfect tenses. The past participle form is also used to modify nouns and pronouns. One example is the phrase sliced bread. The past participle is usually the same as the past tense form.

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a. by showing how a character reacts to or interacts with his or her   surroundings

explanation:

the setting reveal information about a character by showing how a character reacts to or interacts with his or her   surroundings.