To nobody else did the story seem . . . . . . .

The correct answer is B. credible.

A credible story is one that is believable and convincing. It is supported by evidence and makes sense. A contingent story is one that depends on something else happening. A credulous person is easily fooled or persuaded. A creditable person is worthy of trust or respect.

In the sentence “To nobody else did the story seem credible,” the word “credible” means believable and convincing. The sentence is saying that no one else believed the story. This could be because the story was not supported by evidence, or because it did not make sense.