This question is a bit tricky! It's like asking "what type of fruit is an apple?".

Metamorphic rock is a type of rock, not a specific kind. It's a broad category like "fruit".

Here's the breakdown:

* Rocks are classified by how they formed.

* Metamorphic rocks are rocks that have been changed from their original form (igneous or sedimentary) by heat and pressure.

* Specific examples of metamorphic rocks include:

* Marble (from limestone)

* Slate (from shale)

* Gneiss (from granite)

So, to answer your question properly, you need to be more specific about which metamorphic rock you're interested in!