Which of the Following Describes a Connection Between Physical Activity

Which of the following describes a connection between physical activity and energy expenditure?

A) Walking a km uses about the same energy as running a km.
B) Walking a km uses about half as much energy as running a km.
C) Exercising the leg muscles is effective at burning away fat primarily around the thighs and hips.
D) Exercising the abdominal muscles is effective at burning away fat primarily around the abdomen.