Question

1. the crystals that form when magma cools slowly are ____.

colored
large
small
invisible

Explanation:

When magma cools slowly, the mineral crystals have more time to grow, resulting in large crystals (e.g., in intrusive igneous rocks like granite). Color and invisibility aren't determined by cooling rate, and slow cooling doesn't produce small crystals (small crystals form with rapid cooling, like in extrusive rocks).

Answer:

B. large