Which programming approach focuses on tasks performed on the client side of a web application?

Client-side programming is the correct approach focused on tasks performed directly in the user's web browser, without needing to communicate with the server for each action. This approach is essential for enhancing user experience, as it allows for immediate feedback and dynamic interaction with the web pages. Rather than relying on server interactions, client-side programming often utilizes technologies like HTML, CSS, and JavaScript to manipulate the presentation and behavior of the web application directly in the user's environment.

In contrast, server-side programming involves operations that occur on the web server, managing data processing and database interaction before sending outputs to the client. Database administration pertains to the management and organization of data within databases, while software-defined networking is related to network management and architecture rather than directly dealing with web application development. Understanding the distinction between client-side and server-side programming is crucial for developing efficient and responsive web applications.