Which of the following are internal influences?

check all that apply.

a. a park in your neighborhood
b. a friend who is physically active
c. physical activity knowledge
d. how you feel about yourself

I'm going to go out on a limb here and pick D

True your body needs vitamins such as protein, vitamin d, fish oil etc

Not sure exactly what kind of answer you are looking for so i hope this able to be a effective listener and also being  a good conversationalist. and most of all just being there when someone needs you.i hope this .