Which pronoun is correct in the context: The team and Mr. Roberts ___ going to the meeting?

The correct pronoun to complete the sentence is "is," as it aligns with the grammatical structure used when referring to a collective noun—like "team"—which is typically treated as a singular entity in American English. In this context, "The team and Mr. Roberts" is considered a compound subject, but the collective noun "team" is the main focus. Since it is singular, the verb should also be singular, thus requiring "is."

While the use of "are" might seem plausible due to the presence of "Mr. Roberts," it is less common in this construction unless "team" is emphasized as a plural noun in British English contexts. The verbs "were" and "was" denote past tense, which does not apply if the meeting is currently forthcoming or scheduled to happen in the future. Therefore, the best choice that maintains correct subject-verb agreement in this context is "is."