Final answer:
In tennis, a fault and the end of a person's service turn can be caused by the ball landing in the kitchen, a serve struck underhand and below the waist, or the serve being struck from behind the baseline.
Step-by-step explanation:
In tennis, if the ball lands in the kitchen, it will be considered a fault and will end the server's turn. The kitchen, also known as the non-volley zone, is the area near the net where players are not allowed to hit the ball.
If the ball lands on the line in the proper service court, it will be considered a good serve. The service court is the area on the opposite side of the net where the server must hit the ball to start the point.
If the server serves the ball from behind the baseline, it is a legal serve. The baseline is the back boundary line of the court.
If the serve is struck underhand and below the waist, it is a fault and will end the server's turn. According to the rules of tennis, the serve must be struck overhand and above the waist.