Question

1. reflection nebulae : produce blue light :: dark nebulae : ______

a. produce blue light
b. produce no light
c. produce colorful rings
d. produce red light

Explanation:

Reflection nebulae produce blue light by reflecting starlight. Dark nebulae are dense clouds of gas and dust that block light from behind them, so they produce no light. Option A is incorrect as dark nebulae don't produce blue light. Option C is incorrect as they don't produce colorful rings. Option D is incorrect as they don't produce red light.

Answer:

B. PRODUCE NO LIGHT