What are tests conducted when testing for the basic properties of polymeric materials?

What is impossible to do with a hypothesis

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Answer explain why it is not possible to deduce a complete order of reactivity.