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(A) : Lithosphere is the solid crust or the hard top layer of the earth.
(R) : It is made up of rocks and minerals and covered by a thin layer of soil.

Choose the correct option of the following :

  • A.(A) is true but (R) is false.
  • B.(A) is false but (R) is true.
  • C.Both (A) and (R) are correct and (R) explains (A).
  • D.Both (A) and (R) are correct but (R) does not explain (A).

Answer: C

The keyed option is both (A) and (R) are correct and (R) explains (A).

Both statements come from the NCERT geography textbook's description of the lithosphere: the solid crust or hard top layer of the earth, made up of rocks and minerals and covered by a thin layer of soil. The key reads (R) as explaining (A) because it is the composition of rock and mineral that makes the lithosphere solid and hard.

Since both statements are true, the options saying either one is false are ruled out.

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