Dear Friends,
Here is a detailed explanation to this question-
SajjadAhmad
Whether the universe is bound is frequently asked but impossible to answer.(A) Whether the universe is bound is frequently asked but impossible to answer.
(B) A question asked frequently is whether the universe is bound, and it is impossible to answer.
(C) As to whether the universe is bound is frequently asked but impossibly answered question.
(D) Whether the universe is bound is frequently asked but impossible answered.
(E) Whether or not the universe is bound is a question asked frequently but a question impossible to answer.
Choice A: This answer choice maintains proper idiom use, conveys the intended meaning of the sentence and is quite concise. Thus, this answer choice is correct.
Choice B: This answer choice is needlessly wordy, as it expands the sentence through the phrase "A question"; the verb "asked" conveys that a question is involved. This answer choice also changes the meaning of the sentence by substituting the conjunction "but" with the conjunction "and"; this substitution removes the sense of contrast that this sentence needs to convey. Thus, this answer choice is incorrect.
Choice C: This answer choice suffers from a number of errors. This answer choice lacks a determiner to refer to the noun "question". This answer choice also changes the meaning of the sentence by applying the adverb "impossibly" to the verb answered; in doing so, this answer choice implies that the question was answered in an impossible way. Finally, this answer choice is also needlessly wordy due to its use of the phrase "As to". Thus, this answer choice is incorrect.
Choice D: This answer choice incorrectly uses the adjective "impossible" to modify a verb. Thus, this answer choice is incorrect.
Choice E: This answer choice utilizes the incorrect idiom construction "Whether or not". This answer choice is also needlessly wordy and redundant, as it uses the phrase "a question" twice. Thus, this answer choice is incorrect.
Hence, A is the best answer choice.All the best!
Experts' Global Team