Statistician: Changes in the Sun' s luminosity correlate exceedingly well with average land temperatures on Earth. Clearly -- and contrary to accepted opinion among meteorologists -- the Sun' s luminosity essentially controls land temperatures on Earth. Meteorologist: I disagree. Any professional meteorologist will tell you that in a system as complicated as that giving rise to the climate, no significant aspect can be controlled by a single variable. The rejection by the meteorologist of the statistician's conclusion employs which one of the following techniques of argumentation? ['rejecting a conclusion because it is a proposition that cannot be experimentally tested', 'supporting a conclusion about a specific case by invoking a relevant generalization', 'pointing out that potentially unfavorable evidence has been systematically neglected', 'reanalyzing a correlation as reflecting the multiple effects of a single cause']