Question

curves in canyons formed by a downcutting stream are _. downcut meanders furrowed meanders entrenched meanders embedded meanders

Explanation:

Down - cutting by a stream in a canyon leads to the formation of downcut meanders. Entrenched meanders are formed when a river cuts down into its bed while maintaining its meandering pattern. Furrowed meanders is not a standard geological term. Embedded meanders is also not the correct term for this process. Downcut meanders are the result of the stream's erosive action in a canyon.

Answer:

downcut meanders