1.

1). Only B2). Only A3). Only C4). Both B and C

Answer»

The UNDERLINED part of the SENTENCE is grammatically incorrect and should be IMPROVED. The preposition 'under' is wrong and should not be used. Choice B is correct as the preposition 'within' is apt. It means 'inside or in'.

Choices A and C are cancelled because the prepositions 'on' and 'underneath' are wrong.

Hence the correct answer is OPTION 1.



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