D. What did Thomas see in the park?

Решение:

В тексте читаем: "He decided to write a story about a family which was having a picnic in the park." Значит, Томас увидел семью на пикнике.

1. He saw boys playing volleyball.
2. He saw little children making sandcastles.
3. He saw a family having picnic at the park.

Ответ: 3