Rift valleys are formed through which of the following processes?

Rift valleys are formed through a process called faulting. Faulting occurs when the Earth's crust cracks and breaks along two parallel faults, causing the land between the faults to sink and form a valley. This process can happen over a long period of time and can be caused by various geological factors, such as tectonic plate movements, volcanic activity, and changes in the Earth's crust. In simple terms, rift valleys are formed when the ground splits and sinks along two cracks, creating a valley between them. This splitting and sinking of the land is called faulting and is caused by various geological processes.