Which of the following would not be considered a classification for landforms? a. landforms made of rock with a thin layer of weathered sediment and soil b. landforms created from secondary landforms c. landforms formed by sediment deposited by water, wind, or ice d. landforms caused by tectonic activity

A. landforms made of rock with a thin layer of weathered sediment and soil

Explanation:

Landforms is said to be the natural feature of the earth surfaces. The changes in topography such as undulation, shape and how it was formed.

Distinctive landform can be formed from the action of wind(Loess , dune, blowout ) , water (Abyssal plain, channel, Beach ridge) and Ice(Glaciers).

Distinctive landforms can also be formed from tectonic and volcanic activities which is a primary landform basics and usually originates from the inner part of the earth. Example include lava plain, lava spine, lava flow.

Secondary landforms result from further modification of primary landform through weathering and erosion . Distinctive landforms produced are canyon , cave and cliff.  

Landform made of rocks with a thin layer of weathered sediments and rocks are not noticeable or distinctive from the environment.