We knew the news all the time but did not have the ( ) to tell

We knew the news all the time but did not have the ( ) to tell her.
A、heart
B、self-esteem
C、effect
D、concern
【正确答案】：A
【题目解析】：have the heart to do sth.有心做某事，全句含义为我们一直都知道此消息，但是不忍心告诉他。