Fill the blank in the following sentence by choosing the most appropriate alternative: The story is too fantastic to be_______

The correct answer is C) credible. The construction 'too ... to be' means the quality before it prevents the action after it. A story that is too fantastic cannot be believed, so the blank needs a word about belief, and 'credible' fits.

Why the others fail:

• A) praiseworthy: Fantasy is not a barrier to praise. Many fantastical works are praised, so this gives no logical sense.
• B) readable: Fantastic stories are often very readable. 'Too fantastic to be readable' is simply not how the idiom works.
• D) false: This is the trap. 'Fantastic' already suggests unreal, so 'false' repeats the idea rather than completing the logic, and 'too false to be' is not idiomatic.

Core concept: collocation and logical completion in sentence completion. For Mains, the same skill helps in precise writing, where every word must do logical work.

Trap: choosing D because 'fantastic' feels like it means false. Ask what the structure prevents, not what the story is.