A utility company is interested in purchasing a Public Address system (audio frequencies). Because the company works near high-voltage power lines, where 60Hz interference is common, they have requested that the PA system be designed to minimize pickup from the power lines. What would be the best way to minimize this interference

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

scientific laws are the result of testing theories and proving them to be facts.

i don't understand. explain it clearly