The Reason Scientists Believe the Reflective Bright Nebulae Contain More

Multiple Choice

The reason scientists believe the reflective bright nebulae contain more heavy materials than the emission bright nebulae is that___________ .

A) they are blue, and that color is associated with carbon
B) they glow brighter than an energy emission source could produce
C) they are dimmer than a low density source could produce
D) they are brighter than a low density source could produce
E) they reflect more colors than the emission nebulae