The endocrine system consists of hormonal glands that secrete hormone in blood which controls physiological function of body organs. By doing regular exercise we can keep our endocrine system healthy because exercise stimulates or endocrine system to release hormone in the right amount that helps in increasing muscles, making us strong, and depleting the extra fat content.
A healthy and balanced diet is necessary because endocrine system requires proper nutrition to make hormone like protein should be present in sufficient amount because most of the hormone are made up of protein.
Stress condition can lead to hormonal disbalance like elevated cortisol levels in the blood that can decrease the sex hormone level and can lead to irregular periods in females. So managing stress keep our endocrine system healthy. So the correct answer is D.
