If a human hits their hand on something it is their own what that caused it?\nOptions:\n- muscles\n- inner voices\n- two arms\n- one body\n- stupidity
Let's think step by step below.
stupidity
Stupidity is a behaviour that shows a lack of good sense or judgement.

If a human hit his hand on something it is going to hit him as well.

It is an act of stupidity.

.

The answer is stupidity