Answer :
The problem with saying something hurtful during a heated conflict is that you can damage your relationships because you is letter C, you can't take back what you have said. That is why you think before you speak to avoid someone to get hurt or for you to avoid conflict.
C. Can't take back what you've said. During a heated conflict, flared tempers often lead people to say things that may not necessarily be true but inflammatory all the same. In most cases each side will continue to say more hurtful things until the emotional damage caused is too much to bear or one party decides to back down thereby reducing the emotional instability in the scenario.