His muscles are firmest and his ______ colds and infections is highest.
A、ignorance of
B、independence of
C、resistance to
D、attribution to
【正确答案】：C
【题目解析】：ignorance of对......无知；independence of对......独立；resistance to对......抵抗；attribution to归因于。句意：他的肌肉最结实，对感冒和感染的抵抗力最强。
