Answer:
Treadmill.
Explanation:
Treadmilling may be defined as a type of exercise that are quite versatile and provide a good way for the anaerobic exercise. This exercise increase the individual strength and lowers the blood pressure.
Treadmilling is done on the machine and the upper arm strength is used in case of treadmilling. If an individual has problems in his arms, the treadmilling exercise must be avoided by the patient.
Thus, the correct answer is option (d).
