A good diet and some moderate exercise are to good health.
A. adventurous
B. approximate
C. fundamental
D. balanced
网友回答
A. adventurous
B. approximate
(答案→)C. fundamental
D. balanced
解析：考查形容词。A冒险的；B大约的；C基础的，根本的；D平衡的。be fundamental to是……的基础。句意：好的饮食和适度的锻炼是健康的基础。根据句意说明C正确。