First, you have to summarize what is happening in the story. A country mouse invites his city mouse friend to his fields for dinner. The city mouse does not enjoy his dinner, so he invites the country mouse to his house. They cannot eat because they are constantly in danger.
Answer:
The last one
Explanation:
ACTIVE VOICE:
Fresh watermelon were provided fresh by the booster club.
No doubt about it, the person in the action is "fresh watermelon slices"
served fresh by the booster club.
The action is already done.