Astronomers Now Realize That Active Regions on the Sun Are

Astronomers now realize that active regions on the Sun are connected with

A) the dark regions between the bright granulation cells on the photosphere
B) loops of magnetic field emerging from the surface of the Sun
C) the absence of sunspots during a solar minimum
D) great tropical storm systems in the Earth's atmosphere
E) changes in the gravitational pull of the Sun over different parts of its photosphere
Section 15.4: Space Weather