Before beginning a vigorous aerobic exercise routine, all adults should





A. undergo a thorough physical examination.

B. hire a personal trainer.

C. successfully lose five pounds.

D. change their daily eating habits.

i think its a is this correct?

Definitely. A is correct.

Yes.

All are important, but A needs to be done first.

Yes, you are correct. Before beginning a vigorous aerobic exercise routine, all adults should undergo a thorough physical examination (option A). This is important to assess their overall health status and identify any existing medical conditions or health risks that may affect their ability to engage in such activities safely. It is recommended to consult with a healthcare professional who can conduct a physical examination and provide personalized advice and recommendations based on an individual's specific needs and health history.