Your health is affected by your social environment, which includes both your out door

and indoor

Explanation: cause like if your outdoor somebody could be doing something like smoking and that affects your social environment outdoor  and the same for indoor

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.

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.