Is hormone produced by the adrenal glad that increases heart rate and respiratory rate, in response to physical or mental stress. ephedrine, adrenaline, eustress, none of the above

your answer is b

Explanation:

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.