I don't know why Mary always feel good -----.A.about herselfB.for herselfC.by herself D.in herself

I don't know why Mary always feel good -----.
A.about herself
B.for herself
C.by herself
D.in herself

A.about herself
自我感觉良好,自信

选A.about herself
查过词典了，有下面这个句型的：
feel good about... 对…感觉好

A feel good about 对…感觉好

A
feel good about oneself 自我感觉良好