Of the following foods, which likely contains the most easily digestible protein?
a. tuna
b. potatoes
c. whole wheat
d. oats

Given those choices, the Tuna is easier to digest.

The tuna would be easier to digest because it is a meat source in which meat out of all the options, has the most protein and is easily digestible.

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.