Final answer:
Conservation of Charge is the principle that describes the behavior of electric charge, stating that charge cannot be created or destroyed in an isolated system.
Step-by-step explanation:
The principle that best describes the behavior of electric charge is Conservation of Charge. According to this fundamental concept, electric charge cannot be created or destroyed in an isolated system. This principle is rooted in countless experiments and is backed by solid theoretical arguments. This law of physics indicates that, though charges can be moved around (by contact, conduction, or induction), the total quantity of charge within a system remains unchanged throughout any process. Whether discussing static electricity or more complex interactions, the law of conservation of charge is universally obeyed.