However, I must ________ that I do not find this to be a serious

However, I must ________ that I do not find this to be a serious problem, at least not yet.
A、commit
B、confine
C、confess
D、confirm
【正确答案】：C
【题目解析】：commit 犯罪；confine 边界；confess 承认；confirm 坚称；句意：然而，我必须____，我不认为这是一个严重的问题，至少现在还不是。因此C符合题意。