Enormous filaments of excited gas arching over the Sun's surface and extending hundreds of thousand of kilometers outward are called
A) sunspots.
B) solar flares.
C) prominences.
D) coronal arcs.

Question

Quizplus · Accepted Answer

Prominences are large, bright features extending outward from the Sun's surface, often in a loop shape. They are formed of plasma and are anchored to the Sun's surface in the photosphere, and extend outwards into the solar corona.

Enormous Filaments of Excited Gas Arching Over the Sun's Surface