Which of the following is the least important factor of a personal fitness program?
a. the individual's personal conditions
b. the availability of resources
c. the level of motivation
d. the time of day physical activity will be performed

A personal fitness program will be in charge of turning someone into a healthier, more fit and more athletic person, hopefully.

Considering it, one's individual personal conditions are very important. Since you must know that beforehand to adapt the program to those specific conditions. The availability of resources is also important because you also have to know earlier what you have to work with. One's motivation will certainly dictate how harsh, therefore also how effective, the program can be on someone.

In the end, the least important one is

d. the time of day physical activity will be performed

This one will barely affect the program, specially compared to the others.

my answer is the spanish won