Read the passage about the Moon Festival. Choose the best options (A, B, C, or D).

Hello, my name is Susan, I would like to share with everyone my thoughts about my birthday. I don't usually celebrate my birthday. I sometimes hang out with my friends for a small lunch and they often give me some small presents. My parents are always busy, and they are not usually at home on this day. But this year, my birthday is different. I'm on vacation in Vietnam at the moment, and my birthday falls on the same day as the Moon Festival. It's amazing.

People celebrate the Moon Festival every September or October. The festival is on a different day every year, but there is always a full moon. It is more than 3,000 years old. It's fun with different activities, and really colorful - I love it. Everyone doesn't wear traditional clothes, but they eat traditional mooncakes. These small round cakes are tasty, but I don't really like them because they are quite sweet. There are some events that take place on the streets where you can see kids or even adults walking around with colorful lanterns in their hands. You can also see some dancers in colorful costumes perform traditional dances. This is one of the best birthdays I've ever had!

A camping trip to the countryside is a good way to experience ________. A. environment B. hobby C. recipe D. nature