_______ is an ideal home for different kinds of plants, fish and birds.

A. The building B. The zoo C. The wetland D. The cage

C

句意：湿地是各种植物、鱼类和鸟类的理想家园。A. The building建筑物，大楼；B. The zoo动物园；C. The wetland湿地；D. The cage笼子。结合句意和选项可知选C。