When selecting a mode of exercise for a client , it's important to consider the..

a. availability of instructional videos.
b. clients daily caloric intake.
c. amount of interaction with other clients
d. long-term enjoyment of the exercise

B. Clients daily caloric intake.

When selecting a mode of exercise for a client, client's daily caloric intake is important to consider because calories will be burned during exercise. The extensiveness of the exercise will quicken the burning rate of calories. Everybody has the required minimum daily calorie intake to sustain them through the day of normal activities. If extensive exercise is being done and the calorie intake of the client is insufficient, then the exercise will give an adverse effect to the client.

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.