The answer is letter D.
Vitamins can repair muscle damage when taken after an exhaustive exercise. During the process of an exercise activity muscles that are used develop micro tears within its fibers. This inhibits muscle growth and overall performance improvements and is the reason why after exercise you feel sore or your muscles seem to be burning.
Taking vitamins would help aid in the repair of these damaged muscles quickly and will help you to recover from strenuous activities.
The right answer is Electrocardiography (or Electrocardiogram).
In a typical plot, one can notice five characteristic waves. They are called P, Q, R, S and T. The illustration below shows what a normal electrocardiogram looks like:
* the P wave marks the depolarization during the contraction of the atria;
* the PR interval indicates the time required to transmit the electrical impulse of the sinus node of the atria to the ventricular muscles;
* the QRS complex marks depolarization and ventricular contraction;
* the QT interval corresponds to the global ventricular repolarization;
* T wave refers to the end of ventricular repolarization.
Answer:
Effects on the cardiovascular system, the excretory system, the nervous system, and the digestive system.
Explanation:
Hope this Helps!!