Who introduced the term 'Peneplain'?

Correct option is C

• The term 'Peneplain' was introduced by William Morris Davis (W.M. Davis) in the 1890s as part of his Geographical Cycle or Cycle of Erosion Theory.
• A peneplain is a low-relief plain formed due to prolonged erosion, nearing base level but not completely flat.
• Davis proposed that landscapes evolve through three stages:
  1. Youth – High relief, active erosion.
  2. Maturity – Gentle slopes develop.
  3. Old Age – Formation of peneplains due to extensive erosion.

• G.K. Gilbert  → Known for Dynamic Equilibrium and Graded River Theory.
• J.W. Powell  → Introduced the concept of Base Level in fluvial processes.
• C.E. Dirtton  → No known contributions to this concept.