Answer:
Stress occurs when the body physically sustains grave injury due to environmental factors.
To hit a overhand, you jump and smack the ball with your palm when the ball goes over the net
To hit a underhand, you put the ball on the undominant hand and you throw it up then you smack it with your palm
the advantages of a underhand is it might not work and may hit the net
advantage of a overhand is, it goes fast and the opponent might not see it coming.
