this question refers to the counterexample method. Argument: all squares are parallelograms. all rectangles are parallelograms. therefore, all squares are rectangles. which of the following correctly expresses the form of the argument? let s = squares, p=parallelograms, and r = rectangles. all P are S all r are p all s are p all s are p all r are p all r are s all s are p all p are r all s are r all s are p all r are p all s are r