Answer:
C). The reasoning is sound; the author's argument is logical.
Step-by-step explanation:
As per the question, option D best evaluates the use of reasoning in the given excerpt taken from 'Argument'. The reasoning or logic in the given excerpt is quite firm as reflected by the use of substantial claims(that could be verified) like 'If you argue for reputation, this makes your victory the easier' as 'a valid and reasonable argument would enforce the opposition to bend their knees('as they can't comprehend your logic'). Therefore, the argument offers a logical claim and hence, option C is the correct answer.