When he picked up a large sum of money by accident he battled with his whether he should

问题补充：

When he picked up a large sum of money by accident, he battled with his whether he should keep it or return it to the owner.

A. consciousness

B. conscience

C. commitment

D. convenience

答案：

A. consciousness

(答案→)B. conscience

C. commitment

D. convenience

解析：考查名词：A. consciousness意识，B. conscience良心，C. commitment承诺，奉献，D. convenience便利，句意：他偶然捡了很多钱，对于是留下这笔钱还是还给主人他的良心挣扎了很久。选B。