What role does the S principle in SOLID play in software system design?

The Single Responsibility Principle (SRP) in SOLID states that a class should have only one reason to change, meaning it should perform only one task or be responsible for one aspect of functionality.

This helps make the code more understandable, maintainable, and reduces coupling between components. If a class handles too many tasks, changes in one area can affect others, making maintenance more difficult.

Example: a class that manages both database operations and data display in the UI violates this principle. It is better to separate these responsibilities into different classes.