The type of rock that forms due to the weight of the overlying rocks is:
- **Sedimentary**
Sedimentary rocks are formed from the accumulation of sediments over time. When layers of sediments are compressed by the weight of the overlying rocks, the pressure causes the sediments to solidify and form sedimentary rocks. Examples of sedimentary rocks include sandstone, limestone, and shale.
In this case, the correct answer is:
○ C. Sedimentary