单选题 Nuclear power, with all its inherent problems, is still the only option to guarantee enough energy in the future.
A. solution B. policy C. choice D. reason

【正确答案】 C
【答案解析】[解析] C项的意思是选择与“option”“选择”的意思相吻合。A项解决；B项政策、规定；D项理由，原因。