Moderate exercise is better than none, but excessive exercise is harmful.What is the shape of the graph of health benefits versus hours of exercise per week if health benefits are measured on the vertical axis and exercise is measured on the horizontal axis?

A) a positively sloped straight line
B) a negatively sloped straight line
C) a U-shaped curve
D) a hill-shaped curve

Question

Moderate exercise is better than none, but excessive exercise is harmful.What is the shape of the graph of health benefits versus hours of exercise per week if health benefits are measured on the vertical axis and exercise is measured on the horizontal axis?  
 
A) a positively sloped straight line 
B) a negatively sloped straight line 
C) a U-shaped curve​ 
D) a hill-shaped curve​

Quizplus · Accepted Answer

The correct shape is a hill-shaped curve because moderate exercise increases health benefits up to a point, after which excessive exercise starts to reduce health benefits, reflecting a rise and then a fall in health benefits as exercise increases.

Moderate Exercise Is Better Than None, but Excessive Exercise Is