The intense magnetic fields of sunspots cause arch-like eruptions called a. solar eclipses c. photospheres b. corona d. prominences

The intense magnetic fields of sunspots cause arch-like eruptions called prominence.

Explanation:

A prominence is a relatively cool, high density gaseous feature having intense magnetic strength on the sun. It forms loop like structure erupting from surface of the sun - chromosphere and extending into the corona. It is a dark filament against bright background. They are caused to magnetic forces on the sun. Prominence can be observed during solar eclipses.

so easy. just google the electromagnetic waves and it’ll pop up.