The strong increase in imports last year is attributed to buoyan

The strong increase in imports last year is attributed to buoyant economic activity as to the success of the Government's trade and foreign investment policies.  (   )
A、onerous
B、various
C、brisk
D、strong
【正确答案】：C
【题目解析】：buoyant轻快的，上涨的；onerous繁重的；麻烦的；负有义务的；various各种各样的；brisk敏锐的，轻快的；strong强壮的，强烈的。故选C。