The statement that provides evidence that a scientific law is a description while a scientific theory is an explanation is:
Laws of motion state that for any action force, there is an equal and opposite reaction force, while theories state that contact forces are due to electrostatic forces between the charged particles that make up matter.
This statement highlights how laws describe consistent patterns in nature (e.g., the behavior of forces) while theories explain the underlying mechanisms behind those patterns (e.g., electrostatic forces).