Discussion
Assertion (A) : Fjords are the features produced by glacial erosion.
Reason (R) : A fjord is formed when a glacier retreats and forms U-shaped valley and the sea fills the resulting valley floor.
Which of the following is correct ?
Answer: A
Both (A) and (R) are true and (R) is the correct explanation of (A).
A fjord is a long, deep, steep-sided inlet of the sea. During glaciation a valley glacier deepens and widens a river valley into a U-shaped trough, often eroding it far below sea level. When the glacier melts back, the sea floods the trough, producing the fjords of Norway, Chile, Greenland and New Zealand.
The assertion says fjords are products of glacial erosion, and the reason describes exactly how that erosion and the later drowning create them, so R explains A. That rules out the options in which one statement is false or R does not explain A.
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