Bunuel
Most members of the president’s staff do not believe that the proposed bill, as it currently exists, will be passed into law but
that it will, or could, be amended to secure bipartisan support.
(A) that it will, or could,
(B) that it would, or could,
(C) it will be or could
(D) think the proposed bill would or could
(E) think that it will be or could

Project SC Butler
For SC butler Questions Click Here Experts' Global Official Explanation:Parallelism + Meaning + Redundancy/Awkwardness + Modifiers• Any elements linked by a conjunction ("but" and "or" in this sentence) must be parallel.
A. This answer choice fails to maintain parallelism between “do not believe that the proposed bill… will be passed into law” and “that it will, or could, be amended”; please remember that any elements linked by a conjunction (“but” in this sentence) must be parallel. Further, Option A fails to maintain parallelism between "will" and "could be"; please remember, any elements linked by a conjunction ("or" in this sentence) must be parallel.
B. This answer choice fails to maintain parallelism between “do not believe that the proposed bill… will be passed into law” and “that it would, or could be amended”; please remember that any elements linked by a conjunction (“but” in this sentence) must be parallel. Further, Option B fails to maintain parallelism between "would" and "could be"; please remember, any elements linked by a conjunction ("or" in this sentence) must be parallel.
C. This answer choice fails to maintain parallelism between “do not believe that the proposed bill… will be passed into law” and “it will be or could be amended”; please remember that any elements linked by a conjunction (“but” in this sentence) must be parallel.
D. Trap. This answer choice fails to maintain parallelism between "would" and "could be"; please remember, any elements linked by a conjunction ("or" in this sentence) must be parallel.
E. Correct. This answer choice maintains parallelism between “do not believe that the proposed bill… will be passed into law” and “think that it will be or could be amended”. Further, Option E maintains parallelism between "will be" and "could be".
E is the best answer choice.