Which TWO of the following form by the metamorphism of mafic and ultramafic rock?Group of answer choicesgnesshornfelsmarblephyllitequartziteschistserpentiniteslatetalc

The two types of rocks that form by the metamorphism of mafic and ultramafic rocks are Serpentinite and Talc.

Here's a step-by-step explanation:

1. Metamorphism is the process by which existing rocks are transformed in structure, mineralogical composition, or both under the influence of heat, pressure, and chemically active fluids.

2. Mafic and ultramafic rocks are rich in magnesium and iron. They are typically dark in color and have a high density. Examples include basalt and gabbro.

3. When these types of rocks undergo metamorphism, they can form a variety of different rock types.

4. Serpentinite is a rock composed of one or more serpentine group minerals. Serpentinite forms by the hydration and metamorphic transformation of ultramafic rock from the Earth's mantle.

5. Talc is a mineral composed of hydrated magnesium silicate. It forms from the metamorphism of magnesium-rich rocks like dunite and serpentinite.

So, the answer to your question is Serpentinite and Talc.