Which of the following forms at the highest grade of regional metamorphism?
A)schist
B)hornfels
C)phyllite
D)slate

Name: Which of the following forms at the highest grade of regional metamorphism? A)schist B)hornfels C)phyllite D)slate
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Schist is the highest grade of regional metamorphism as it undergoes intense pressure and heat, resulting in the formation of distinct layers of mineral grains. Hornfels, phyllite, and slate are lower grades of metamorphism.

Which of the Following Forms at the Highest Grade of Regional