The answer to this is letter B
Answer:
There are many harmful chemicals in the cigarette that increases the red blood count. The compounds that is found in the cigarette are carbon monoxide, and other compounds that decreases the level of oxygen inside the body.
In order to compensate the oxygen level of the body, the body boosts the level of production of red blood blood cells in the body.
hence, the chemical like carbon dioxide and monoxide tends to decrease the level of oxygen in the body and elevated red blood cells.
A half hour to an hour. It is called Duration.
Because most people get the same iq as the doctor was expecting, im sorry if that doesnt make sense, its honestly a very hard question
