피드백 (Response) refers to the information or reactions provided in response to an action, event, or communication. It is essential in various contexts, such as education, business, and personal relationships, as it helps individuals understand how their actions are perceived and what improvements can be made. In the context of education, teachers often give feedback on students' work to guide their learning. Similarly, in business, customer feedback can inform companies about their products or services, allowing them to make necessary adjustments to meet consumer needs.