It is the mongols, this answer is
If you're referring to streams/rivers of water that run independently of another source in the ocean these are referred to as "currents" and can be very powerful depending on their location.
I believe the answer is C, any kind of rock (metamorphic and sediment) can become igneous if melted and cooled.
Hope this helps.
Answer:
39 mpg
Explanation:
I took the test and got it correct