Which of the following factors is LEAST associated with alluvial landscape development?

The development of alluvial landscapes is primarily influenced by processes such as sediment deposition, flooding events, and river meandering. Alluvial landscapes are formed through the accumulation of sediment carried by flowing water, often in the form of river deltas or floodplains.

Flooding events play a critical role as they transport and deposit sediments, replenishing the landscape and creating fertile ground for vegetation. Similarly, river meandering helps shape the riverbanks and contributes to sediment deposition in various areas along the course of the river.

In contrast, deep dissection and erosion are not fundamental to the development of alluvial landscapes. While erosion can accompany certain geological processes, alluvial landscapes specifically thrive in regions where sediment deposition occurs rather than in areas where substantial erosion and deep dissection dominate. Such dissection typically leads to more rugged, dissected landscapes rather than the flat or gently sloping surfaces characteristic of alluvial zones. Thus, the factor that is least associated with the development of alluvial landscapes is primarily deep dissection and erosion.