How Many Staff Members Are Needed to Handle Event Logistics?

The correct answer is b. formed. A team of ten staff members would be formed to handle the logistics of the event. The word "formed" implies the creation of a group specifically for this purpose.

Explanation:

• accumulated: This word means to gather or collect over time. It doesn't fit the context of forming a team.
• solved: This word means to find a solution to a problem. It doesn't relate to the process of creating a team.
• formulated: This word implies the careful planning and development of something, which might apply to the event planning itself, but not the team formation.

Therefore, "formed" is the most accurate and appropriate word to describe the creation of a team to handle event logistics.