Tough one! I would go with B; anyone can have opinions on anything, so there goes C as an answer. A and D are inherently the same and is the opposite of what debatable means.
The passages mentioned are not listed in the question. I will give a clear distinction between arguments and explanations, the knowledge of this will help in providing answers to the question.
An explanation is an attempt to provide a cause or reason for a conclusion. It helps to provide reasons why a conclusion is made.
For example in the conclusion, "John will fail his exam", the writer can give a simple explanation to support his claim.
"The reason why i believe John will fail his exam is that he has not prepared well enough for it." is a simple explanation to support the above conclusion.
An argument is an attempt to provide an evidence in support of a conclusion.
This is done when the response of your audience is that of doubt an unbelief.
C. repairing because it implies he can actually fix them and is not only "messing with" them.
True because clause mean unit of grammatical organization next below the sentence in rank and in traditional grammar said to consist of a subject and predicate.
