Question

which of the following is most likely to be a health effect of air pollution?
giardia
asthma
kidney damage
cholera

Explanation:

Air pollution can irritate the respiratory system. Asthma is a respiratory condition. Giardia is water - borne. Cholera is water - borne. Kidney damage is less directly linked to air pollution compared to respiratory issues like asthma.

Answer:

asthma