Think about the debate, and evaluate which claims were more clearly supported by reasons and evidence. be sure to consider which speaker’s arguments and explanations best match the available evidence, and which one acknowledged where the evidence leaves matters uncertain.

One should evaluate those claims which are supported by not only facts but also its genuineness.

Explanation:

One should argue only for the truth. Though there may be a number of counter arguments to nullify the truth and evidence. The argument which comes close to the available evidence will always be considered the truth. Cloudy or messy evidence doesn't help to clear things and this could hardly bring a fair conclusion among the audience.

this is b. how railways dealt with people riding the trains without paying

c, his tragic flaw to cause his downfall