A. Last Sunday Paul and his parents went...

Ответ (RU):

1. to the cinema.
2. to the countryside.
3. to the zoo.

В тексте указано: "Last Sunday Paul and his parents went to visit his grandparents in the countryside".

Следовательно, правильный ответ: 2. to the countryside.

Ответ: 2. to the countryside