Which method can a developer use to ensure cross-browser compatibility?

Testing the website across multiple browsers is crucial for ensuring cross-browser compatibility because web applications can behave differently depending on the browser, its version, and the user’s operating system. Each browser may interpret HTML, CSS, and JavaScript differently due to variations in rendering engines and adherence to web standards.

By performing tests on various browsers—such as Chrome, Firefox, Safari, Edge, and older versions of these—developers can identify and address inconsistencies in design, functionality, and performance. This iterative testing process allows developers to make necessary adjustments in code or styling to provide users with a consistent experience regardless of their browser choice.

The other methods, while they may seem valid, do not effectively ensure cross-browser compatibility. For instance, relying solely on the latest browsers excludes users who may not update frequently or prefer older versions. Avoiding JavaScript entirely diminishes the functionality of many modern websites, which rely on it for interactivity and client-side processing. Limiting access to one browser restricts the audience and undermines the usability of the website. Thus, comprehensive testing is essential for broad compatibility.