Which of the following is a social change which occurs during young adulthood? a. peak physical fitness b. starting your own family c. continuing development of close relationships d. conflicting feelings from adolescence disappear

I think it’s D, being surrounded with young adults

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases.