Question

which of the following is a controllable risk factor of infectious diseases? a. drug abuse b. pollution c. air d. heredity please select the best answer from the choices provided. a b c d

Explanation:

• Drug abuse (A): It is a behavior that an individual can choose to change or stop. For example, through rehabilitation programs and personal willpower, one can control drug - abuse behavior, which in turn can reduce the risk of infectious diseases (e.g., sharing needles in drug abuse can lead to the spread of HIV/AIDS).
• Pollution (B): While efforts can be made to reduce pollution, it is often a large - scale environmental issue that is influenced by many factors (such as industrial activities, transportation) and is not as directly controllable by an individual in the context of being a risk factor for infectious diseases as drug abuse.
• Air (C): Air is a natural element. Although we can take measures to improve air quality in some limited spaces (like using air purifiers at home), in general, air as a whole is not a controllable risk factor in the sense of preventing infectious diseases compared to individual - level behaviors.
• Heredity (D): Heredity is determined by genetic factors and is not something that can be changed or controlled by an individual to prevent infectious diseases.

Answer:

A. drug abuse