Discussion

Match the List-I and List-II and select the correct answer from the codes given below :

List I (Theoretical Terms)	List II (Proponents)
(a) Simultaneous upliftment and erosion	(1) W.M. Davis
(b) Erosion of a stable landmass	(2) L.C. King
(c) Morphometric analysis	(3) W. Penck
(d) Pediplanation in semi-arid regions	(4) A.N. Strahler

Answer: A

The correct match is a-3, b-1, c-4, d-2.

Simultaneous uplift and erosion: W. Penck, whose model (1924) related slope form to the rate of uplift relative to erosion (a-3).
Erosion of a stable landmass: W.M. Davis, whose cycle of erosion assumes rapid uplift followed by a long period of stability (b-1).
Morphometric analysis: A.N. Strahler, who put drainage basins on a quantitative footing with stream ordering (c-4).
Pediplanation in semi-arid regions: L.C. King, who explained landscapes by the parallel retreat of slopes and the spread of pediments (d-2).

Option B confuses King with Penck, and options C and D misplace Davis or Strahler.

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