Which statement is the best example of a reason?

a. but when you look back on your life, wouldn't you rather have succeeded or failed because of the choices you
made, not because of some rude thing someone said?

b. most importantly, this is your life, not someone else's, and it's your responsibility to live it.

c. some goals you might not achieve, and some dreams might always remain dreams.

d. or would you rather spend the rest of your life wondering what might have happened if you had soldiered on?