Question

Decide which fundraiser you think the library should choose. Brainstorm reasons the proposal you chose is the better option for the library’s fundraiser. What makes the idea you chose stronger?

Answer 1

I personally would choose the board game fundraising
Even though this not applicable for all, the large majority of book readers belong to the introvert personality side.
Because of this, activities that made into fundraising should be something that appealing to introverts in General (which definitely acceptable by extroverts since they basically good in all social situations), such as board game fundraising.

Answer 2

I named which proposal I prefer.  I explained why my choice is a better option.  I gave reasons to explain my preference.