Read the sentence:

To the best of our knowledge, he decided that his major would be acting.

Which does the sentence contain?

A) a conjunction

B) a gerund

C) an infinitive

D) a participle

The sentence "To the best of our knowledge, he decided that his major would be acting.", contains a participle. What major? acting. The acting is the present participle that modifies the subject he.

The correct answer is: Option (B) A gerund

Explanation:

In simple words, a gerund is a form that is derived from a verb but that functions as a noun.

Gerund = (base-form-of-verb) + ing

In the given sentence, there is only one gerund, i. e. acting.

Acting = Act + ing (works as a noun)

Therefore, acting is a gerund, and the sentence contains a gerund.

Hence, the correct answer is option (B) a gerund.