Which of the following is NOT a property of mass?

The correct choice indicates that "speed of production" is not a property of mass. Mass is fundamentally a measure of the amount of matter in an object, and its properties relate to how that mass interacts with forces.

Weight is a direct consequence of mass, as it is the force exerted by gravity on an object's mass. The center of gravity location is an important property that determines how mass is distributed within an object, influencing its stability and behavior under various forces. Inertia, which refers to an object's resistance to changes in its state of motion, is also directly related to mass and is typically quantified regarding the center of gravity.

In contrast, "speed of production" pertains to the rate at which a specific process or action occurs—such as how quickly something is manufactured or created—and does not inherently relate to the fundamental physical property of mass. Thus, this option stands apart from the properties that define mass and its effects on physical systems.