Intense feelings of hopelessness or dread
I believe the answer is D
The answer is: The ATP-CP system.
This energy consists of phosphates called: Adenosine triphosphate and phosphocreatine
It gives really quick energy, and this occurs when they are broken down.
Hope this helps :)
Individuals should participate in Aerobic exercises to increase cardiovascular endurance. (There's more exercises than just running that can increase your cardiovascular endurance, aerobic is more of a group of activities that do such)