Topic: Subject Verb Agreement,

Best Answer Explained in Below-:

The phrase "Our team — the best team." is a singular noun phrase referring to an entire group operating as a single entity. In English, collective nouns like "team," "group," or "committee" are typically treated as singular, especially when emphasizing the unity and collective identity of the members.

In this case, "Our team" signifies one cohesive unit, making "is" the appropriate choice to use with it. The verb "is" concords with "team," which identifies it as a singular noun. Saying "Our team is the best team" conveys that the collective effort, skills, and achievements of the team, as a whole, are being recognized.

Choosing "are" would incorrectly treat the term "team" as if referring to its individual members. The options “one of” and “little” do not fit grammatically or contextually within the sentence structure. Thus, "is" clearly establishes proper subject-verb agreement and effectively communicates the intended meaning.