S2 문장의 [______]에 들어갈 단어는?

난이도 고난도 · 힌트를 덜 열수록 높은 점수 (현재 5점)
《Arch Creek Winter Camp》
Arch Creek Winter Camp is a nature-based specialty camp that teaches children about the wonders of the environment through [______] games, activities, crafts, and field trips.