Answer:
Here is the answer
During aerobic exercise, you breathe faster and deeper than when your heart rate is at rest. Your heart rates goes up, increasing blood flow to the muscles and back to lungs.
During anaerobic exercise, your body requires immediate energy.
Medical diagnosis is the process of determining which disease or condition explains a person's symptoms and signs.It basically enables the doctor understand what disease is the patient going through.
Diagnosis is often challenging, because many signs and symptoms are nonspecific and different diseases also have them.
For example, redness of the skin is a sign of many disorders and thus does not tell the healthcare professional what is wrong.
A and D both seem correct