none at all 就是一点也没有]
前面It would be better to make some sort of decision是一部分,后面that none (decision) at all .
It would be better to make some sort of decision than none at all.
none=no decision
B和D不用考虑。剩下nothing和none.nothing是什么也没有。所以楼上的对,一点决定也没有才是正确答案。
随便做个决定吧,总比没有决定强。