Which of the following values can represent the magnification of a simple microscope?

+2

Reason — In a simple microscope a convex lens is used to view close objects so it's magnification should be positive, because the image formed is virtual, erect, and magnified, typically greater than 1, since the purpose is to enlarge the image.

So, from the given options +2 power is justified since it will produce virtual, erect and 2x magnified image of the object.