Question

Dark spots on the photosphere are known as

A. the chromosphere.
B. sunspots.
C. solar wind.
D. the corona

Answer 1

Dark spots on the photosphere are known as sunspot.
Have you tried to take picture to the sun? despite its bright color and rays, when you try to take photo to it, its center appears dark in your lense.
This is the phenomenon that shows magnetic field flux concentration