C. What surprised Leo during his walk with his grandfather? (Что Лео удивило во время прогулки с дедушкой?) 1. How many cars were on the road. 2. How different the city and countryside were. 3. The number of streetlights in the village. 4. The variety of food in local supermarkets.

Решение:

В тексте говорится: "As the days passed, Leo learned more about the countryside. He discovered how different it was from city life. The air was fresher, the nights were quieter, and the stars were much brighter."

Это означает, что Лео был удивлен тем, насколько сильно город и деревня отличаются друг от друга.

Ответ: 2