The correct answer is A. Asthma
Step-by-step explanation:
Secondhand smoke refers to the smoke exhaled by another person after the person has used products such as cigarettes. This smoke is believed to be even more toxic than regular smoke and due to this, people should avoid being exposed to this. In the case of children, secondhand smoke can have direct negative effects on their respiratory system due to the toxins inhaled, this includes respiratory infections and asthma. In the case of asthma, this occurs as airways swell, which can be caused by constant exposition to secondhand smoke or can be worsened by it. Thus, a health risk for children exposed to secondhand smoke is Asthma.