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1.        Sartre believed each individual is responsible to choose one course of action over another one, that it is the choice that gives value to the act, and that nothing that is not acted upon has value.

(A) each individual is responsible to choose one course of action over another one

(B) that each individual is responsible for choosing one course of action over another

(C) that each individual is responsible, choosing one course of action over another

(D) that each individual is responsible to choose one course of action over the other（B）

(E) each individual is responsible for choosing one course of action over other ones

请问这句话是什么意思，尤其是highlight的部分，晕掉了