Which of the following statements about energy is correct?

The statement that energy can only be transformed from one form to another is accurate because it aligns with the law of conservation of energy. This principle states that energy cannot be created or destroyed; instead, it can only change forms. For instance, potential energy can transform into kinetic energy, chemical energy can convert into thermal energy during a reaction, and so on. This transformation occurs in various physical and chemical processes, highlighting that energy is always conserved in a closed system.

The other statements do not hold true based on fundamental scientific principles. Energy being created or destroyed contradicts the established law of conservation. While energy can indeed be associated with motion, it is not restricted solely to that; it exists in many forms such as potential energy, thermal energy, and more. Lastly, although energy in some instances might not be visible, it can certainly be measured through various units (joules, calories, etc.) using the appropriate tools.