Which one of the following crops would probably be least affected by air pollution?

Potatoes are generally considered to be less affected by air pollution compared to the other crops listed. This can be attributed to several factors. Potatoes grow underground, which may shield them from direct exposure to air pollutants compared to crops that have more exposed foliage. Additionally, potatoes have a robust structure and can sometimes exhibit resilience to certain environmental stresses.

The other crops, such as peanuts, soybeans, and cotton, tend to have a greater surface area exposed to the air and may be more susceptible to the adverse effects of pollutants like ozone, sulfur dioxide, and particulate matter. These pollutants can interfere with photosynthesis and overall plant health, impacting yield and quality. Therefore, due to their growth characteristics and underground nature, potatoes are likely to be the least affected by air pollution.