Final answer:
Tectonic uplift does not contribute to the reduction of elevation in a landscape.
Step-by-step explanation:
The process that does not contribute to the reduction of elevation in a landscape is tectonic uplift. Tectonic uplift refers to the upward movement of the Earth's crust due to tectonic forces, such as plate movements and mountain building. This process actually increases the elevation of landforms.tectonic uplift is the process that increases elevation, while weathering, mass wasting, and erosion can contribute to the reduction of elevation in a landscape through the breakdown, movement, and transportation of geological materials.