Question

1. which property describes how a mineral reflects light?

a. cleavage
b. luster
c. streak
d. fracture

Explanation:

To solve this, we analyze each option:

• Option A: Cleavage refers to how a mineral breaks along flat planes, not light reflection.
• Option B: Luster is defined as the way a mineral reflects light, which matches the question.
• Option C: Streak is the color of a mineral's powder, not related to light reflection.
• Option D: Fracture is how a mineral breaks when not along cleavage planes, not about light reflection.

Answer:

B. Luster