Answer:
IV, II, I, III.
Explanation:
Smoking can be defined as an act of inhaling toxic substances such as marijuana, cigarettes, tobacco, etc., through the buccal cavity (mouth) into the body system. The world health organization (WHO) has warned that smoking is hazardous and smokers are liable to die young because they are much more likely to develop lung cancer and other heart related diseases.
When an individual quits or stops smoking, he or she would experience some physical changes and improvements.
Thus, the improvements a smoker will experience first, second, third, and fourth once he or she stops smoking includes the following;
1. Pulse rate decreases: the rate at which the heart beats and pumps blood decreases significantly as compared to when the individual was an active smoker.
2. Carbon monoxide levels improve: there are less deposits of carbon monoxide in the body system of the individual.
3. Circulation improves: the transportation of blood by the arteries and veins becomes efficient and better than when the individual was actively smoking.
4. Lung infections decrease: the chances of developing a lung related diseases is reduced significantly.