In the sentence "His hobby is writing poetry," the phrase "writing poetry" is a gerund phrase. A gerund phrase is verb+ ing which functions as a noun. In the sentence, the phrase "writing poetry" is a noun acting as a complement of the subject.
His hobby = writing poetry. This means "writing poetry" complements the subject "His hobby".
1. They help the setting become more realistic.
2. They could even help the main character on stage feel less anxious, since they're not the only one up there.
Beautiful, barbaric, big, bipolar, bold, basic
accommodate
OPTION A is the correct answer
Your verbal phrase is "to see" and the type is "infinitive." I do hope this helps you!