Question

modernizing coal-burning power plants would most likely result in:
○ less acid rain and cleaner air
○ more acid rain and crop damage
○ more ash deposition
○ increased sulfur dioxide emissions

Explanation:

Modernizing coal - burning power plants typically involves implementing technologies to reduce emissions of pollutants like sulfur dioxide (which contributes to acid rain) and other particulate matter. So, modernizing would lead to less acid rain (since less sulfur dioxide is emitted) and cleaner air. The other options (more acid rain, more ash deposition, increased sulfur dioxide emissions) are contrary to what modernization aims to achieve.

Answer:

A. Less acid rain and cleaner air