In order to understand the of the animal she spent many years recording its daily activit

问题补充：

In order to understand the of the animal, she spent many years recording its daily activities.

A. performance

B. deed

C. behavior

D. personality

答案：

A. performance

B. deed

(答案→)C. behavior

D. personality

解析：名词辨析。A表演；B行为,行动（相对于words）；C行为,举止;态度；D 个性；结合句意可知C正确。句意：为了理解动物的行为，她花了很多年来记录动物的日常行为。