It’s one’s bad habits, rather than a certain natural disaster,one’s longevity (长寿)for most

It’s one’s bad habits, rather than a certain natural disaster, one’s longevity (长寿)for most of the time.
A. that affects
B. which affect
C. which affects
D. that affect

A. that affectsB. which affectC. which affects(答案→)D. that affect解析：句意:是个人的习惯而不是自然灾害影响人长寿的大部分时间。这里强调句型，这里被强调的主语，真正的主语one’s bad habits，主语是复数，故排除AC, 判断强调句型的方法是把It was that这三个词去掉，整个句子不缺成分，意思完整。故选D。

和我的回答一样，看来我也对了