Answer-Choice C describes a conclusion?

None of the previous clarifications eliminate C for the reason I eliminate it. I would like to know whether my reason for eliminating C is correct, please! I eliminated answer-choice C because a statement that provides an "explanation," be it causal or or not, is a conclusion. In other words, something that explains a phenomenon is a conclusion. Is it not? And since the statement in question is not the conclusion (the conclusion is "it probably does"), I eliminated C. Did I eliminate C for the right reason, which is, as stated above, C describes a conclusion whereas the role of the statement in question is not the conclusion? Thank you