41. apply what you've learned: based on grain size, which rock type is most likely to be a volcanic rock? a gabbro b. diorite c. granite d andesite

d. andesite

Explanation:

Volcanic rocks, also known as extrusive rocks, forms when the magma (called lava once it reaches the surface), flows onto Earth’s surface. The texture of the rock is determined by the rate of cooling, the slower the rock cools, the larger the crystals form, therefore, volcanic rocks present fine-grained or aphanitic to glassy texture because they cool relatively quickly and under low pressures.

Considering this we'll now analyze each option given:

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