Ans:- Visualforce pages can be made interactive and responsive by using various techniques. This includes using JavaScript and AJAX to perform client-side actions and update page content without refreshing the entire page. Visualforce also provides built-in tags such as and that allow developers to define actions and triggers based on user interactions. Additionally, Visualforce supports the use of JavaScript frameworks like jQuery and AngularJS to enhance interactivity and responsiveness. You can also learn more about it in the salesforce online training and certification that are being offered.