Question

Look, somebody a) are climbing b )am climbing c) is climbing

Answer 1

Look, somebody is climbing. (c)

Answer 2

The correct answer is "c) is climbing."

The verb "climbing" is in the present participle form, which requires the auxiliary verb "to be" to create the present continuous tense. In this case, the subject of the sentence is singular ("somebody"), so the correct form of the auxiliary verb is "is." Therefore, the correct sentence is "Somebody is climbing."