Final answer:
Hedonism is the philosophy that believes one should do whatever they want based on the principle that pleasure determines what is good and pain determines what is bad.
Step-by-step explanation:
Hedonism is the philosophy that believes one should do whatever they want. This philosophical approach is based on the idea that pleasure determines what is good and pain determines what is bad. Hedonism prioritizes the pursuit of pleasure and the avoidance of pain as the guiding principles for ethical behavior.