What Is the Most Likely Reason Why Smokers Are More

question 37

Multiple Choice

What is the most likely reason why smokers are more at risk for respiratory system infections?

• A)Cigarette smoke is carcinogenic (cancer-causing),leading to a much higher incidence of lung cancer.
• B)They aren't-this is just a rumor used to get people to stop smoking.
• C)Chemicals in cigarette smoke can impair the mucociliary escalator,preventing natural cleansing of the respiratory tract.
• D)Smokers take in microbes from their hands into their lungs as they handle cigarettes and inhale the smoke.

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Definitions:

Categorical

Pertaining to categories; often used to describe variables that represent data which can be divided into distinct groups, lacking a natural order.

Identify Cases

The process of pinpointing and examining specific instances within a dataset or research study that are relevant to the investigation.

Variable

An element, feature, or factor that is liable to vary or change.

Characteristic

A feature or quality belonging typically to a person, place, or thing and serving to identify it.