question 7 of 15 once rock reaches a depth of about _____, it may melt. a. 500 m b. 1 km c. 50 km d. 750 km

question 7 of 15 once rock reaches a depth of about _____, it may melt. a. 500 m b. 1 km c. 50 km d. 750 km
Answer
Answer:
C. 50 km
Brief Explanation:
As rocks go deeper in the Earth's crust and mantle, with increasing depth (around 50 km), high - pressure and high - temperature conditions can cause rocks to melt.