Final answer:
The extent of the preexercise evaluation is based on the discretion of the healthcare professional and may include medical history review, physical examination, and additional tests.
Step-by-step explanation:
The extent of the preexercise evaluation when an individual is referred for medical clearance is based on the discretion of the healthcare professional.
The preexercise evaluation may range from a simple review of medical history and a physical examination to more extensive tests such as laboratory tests, electrocardiogram (ECG), or exercise stress test.
The healthcare professional will consider various factors, including the individual's medical history, current health condition, and the type and intensity of the exercise the individual intends to undertake.