2) our ability to perform everyday tasks, such as walking up the stairs, is an example of
a. improved quality of life.
b. activities of daily living.
c. good health.
d. health promotion.

I would say B and C, because climbing stairs is a daily activity for most people, and if you do it a lot it shows signs of good health

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.