A hairline fracture is a crack on the bone. A compound fracture is when the fractured bone sticks through the skin.
Correct answer to your question is true
C or d 50% or 65% I hope I helped you
The answer would be : C. Increase the intensity of cardiovascular workouts
cardiovascular workouts are the best one to increase the target heart rate. By increasing it's intensity, Xavier will increase his heart rate to the point where he managed to achieve his target
hope this helps