Energy always moves from b. substances with more energy toward those with less.
The correct answer is b. Energy always moves from substances with more energy toward those with less. This is based on the second law of thermodynamics, which states that in any energy transfer or transformation, the total entropy of a closed system always increases, meaning that energy tends to disperse from areas of higher concentration to areas of lower concentration until an equilibrium is reached. This is true for all forms of energy, including heat, light, and mechanical energy. The other options listed are not accurate representations of the general principles of energy transfer and thermodynamics.