Dark areas can form in the photosphere of the sun. these areas are cooler than surrounding areas. they also have a strong magnetic field. which term best describes these dark areas?

The answer is - Sunspots.

Sunspots are dark in appearance, but only on a visible light, and this is due to the fact that they are much cooler than the surrounding areas, but that doesn't mean by any means that the sunspots are cool, on contrary, they are very hot too. Sunspots actually are storms that appear in the lower atmosphere of the sun.

Can you show the map?