When disagreeing with a premise,
one should point to the outcomes of the conclusion
one should have reasons in place that demonstrate the premise is not sufficiently likely to be true.
one should attack premises that are not important to the argument
one should point out the failings of its author

The correct answer for the question that is being presented above is this one: "one should have reasons in place that demonstrate the premise is not sufficiently likely to be true." When disagreeing with a premise, one should have reasons in place that demonstrate the premise is not sufficiently likely to be true.