The starter phase of a fitness program is important because it end of exam a. gives a person the opportunity to discover the exercises that work best for his or her needs. b. makes running easier. c. allows a person to lose a lot of weight quickly. d. ensures that a person sticks with a certain exercise regimen.

It would be A because it gives someone the chance to see what works best for them

Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.