Narrow canyons are formed when:

A) downward incision is faster than widening of the canyon by erosion
B) downward incision is slower than widening of the canyon by erosion
C) erosion widens the canyon before the downward incision begins

Narrow Canyons

Deep, slender valleys with steep sides, carved by the erosive force of flowing water over geological time scales.

Downward Incision

The erosional process by which a river cuts deeper into its bed, often leading to the formation of a canyon or gorge.

Erosion

The process by which natural forces like water, wind, ice, and gravity wear away and break down earth materials, transporting them from one place to another.