A. The first is a statement that substantiates the importance of the argument's issue; the second is a strategy that, if acted upon, will eliminate the issue.
Incorrect, the first BF seems correct but the second BF doesn't seem correct as we cannot say with the certainty that it will eliminate the issue.
B. The first offers further details about a problem discussed as the main topic of the argument; the second is evidence that this problem may be solved.
Incorrect, the first BF seems correct but the second BF is not an evidence, it is a strategy to solve the problem.
C. The first is an objection raised against the position taken by the argument; the second is a judgment that is supported by the position taken by the argument.
Incorrect, the first BF is not an objection against the author's conclusion, the second BF is itself a part of the conclusion.
D. The first is a comparison used to further define the content of the argument; the second is a suggestion proposed to deal with solving the issue raised in the argument.
Correct, the first BF seems correct as the comparison highlights the problem, the second BF is a suggestion that may solve the problem.
E. The first is evidence that supports the argument's validity; the second seeks to explain the circumstances presented by the argument as a whole.
Incorrect, the first doesn't support that the argument is valid, the second BF doesn't explain any circumstance.