The correct answer is A. Sunspots
Explanation:
The Sun is the star that is the center of the Solar system where Earth is located and that is mainly composed of hydrogen, helium and other elements such as oxygen, carbon or iron. In terms of the photosphere or the outer shell of the Sun this is a plasma layer that is mainly observed as uniform in color, but also presents dark areas that are called sunspots, these are cooler areas in the surface of the sun that exist as a result of the magnetic field of the sun; additionally, this can appear individually or in groups which are called Sunspot Groups. Therefore, the dark, cooler areas on the sun's surface are called Sunspots.
