To the best of our knowledge, he decided that his major would be acting
does this sentence contain a conjunction a gerund a participle or a infinitive?

the answer you are looking for is gerund. i just scored a 100 on my test.

The answer is indeed a gerund.

Explanation:

Gerunds are words formed by adding -ing to verbs. Even though they look like verbs, they behave like nouns, having the same functions nouns have in a sentence. A gerund can, for example, function as the subject of a sentence.

When it comes to the sentence "To the best of our knowledge, he decided that his major would be acting," we have the verb "be" functioning as a linking verb. That means its job is to connect the subject to a word or words that provide information about that it. The verb "be" is accompanied by the modal verb "would" and its subject is the noun "major". What is the subject complement, then? It is "acting." We are completing the necessary information about the subject. What would be the major? The major would be acting.

The gerund "acting" functions as a noun and acts as a subject complement in this sentence.

ldk does she/he?!

Explanation: