[Solved] Why was Aristotle wrong about the lack of parallax shift in stars when proposing this as evidence for the geocentric model of the Universe? A) Parallax would also not occur in a heliocentric Solar System. B) The stars only appear to show no parallax when viewed with the naked eye; parallax can, in fact, be measured with the right instruments. C) Parallax should be apparent in the geocentric model; Aristotle's basis for his calculations were incorrect. D) Aristotle was simply looking at the wrong sea of stars-only some stars display parallax. Elastic Supply: Elastic supply refers to a situation where the quantity of goods supplied to the market can quickly increase or decrease in response to changes in price. Short Run: A period in which at least one input is fixed and cannot be changed by the firm. Marginal Product of Labor: The extra output produced by adding one more unit of labor, holding other inputs constant. Marginal Revenue Product: null