Answer the following question given this paragraph: 

The rocks in this photo of the Grand Canyon are all sedimentary. Hard rocks that are resistant to weathering form cliffs. Softer rocks that weather more easily form slopes.


Q: In places like the grand canyon, hard rocks that are resistant to weathering form what, while softer rocks that weather more easily form slopes?

 Choices:

- valleys

- peaks

- crevasses

- cliffs

A:
cliffs
