Plot is to hard pls help

Which sentence from the text indicates that fred is nervous about riding the ferris wheel?

The legend of king arthur and the basis of its factuality have drawn a good deal of attention for hundreds of years, from both popular culture as well as academic scholars. consider, now, the consequences of a definitive resolution to the issue of his existence. do you feel that not knowing in this case is perhaps preferred to knowing? what other mysteries might we as a culture prefer to remain unsolved? why?

Which three sentences in this excerpt from arthur conan doyle's "the contest" suggest that the author's tone is mocking?