OE


Immutable means unchanging and unchangeable The size of an object is not changed and cannot be changed by distance from the viewer. Option A is the correct answer. Flexible is an antonym and suggests that the size of an object can and will change depending on the distance from the viewer. Stable suggests that object size is changeable, but remains temporary unchanged. Abiding suggests that the object remains unchanged because it adheres to a rule, rather than because it is of a constant size. Abiding, like stable includes the possibility of change in size. Uniform suggests that all objects are the same size.