Final answer:
The correct sentence that refers to the collective noun 'team' as individuals is option B, using the plural verb 'were' to indicate individual actions by the team members.
Step-by-step explanation:
The sentence that correctly refers to the collective noun team as individuals is option B: 'The team were writing letters of appreciation to their families for a year of great support.' This sentence uses plural verb 'were' indicating the members of the team are acting individually in writing letters. The other sentences refer to the team as a single unit and thus use a singular verb.