Question

which is a trigger for asthma attacks?

lack of vitamin d

air pollution

too much sugar

bacterial infection

Explanation:

Air pollution can irritate the airways, leading to asthma attacks. Lack of Vitamin D is more related to overall health and bone - related issues. Too much sugar is mainly associated with metabolic problems like diabetes. Bacterial infections can cause other respiratory issues but are not a direct common trigger for asthma attacks like air pollution.

Answer:

air pollution