When a person decides to quit, he or she can a. get help from a doctor
b. get help from an organization such as the American Cancer Society
c. use stress relief techniques
d. all of the above

d

Explanation:

i hope this helps plz consider marking brainlist

so i really think that most of the health care industry be doing more bad than good.

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.