Answer:
Jeff can use programming languages like JavaScript, python, PHP, Java etc.
Step-by-step explanation:
Creating a web site involve using both front-end language and back-end languages.
The front end language is use to design how the website looks. The front-end works on the appearance and the user interface. Programming languages that are basically front end language are HTML, CSS and JavaScript.
Server side or back-end languages can be use to add interactivity and also make your website dynamic. Dynamic website present real time interaction with the user. Dynamic website changes base on the behavior and preference of the user. The programming languages one can use to create dynamic content and interactive contents are python, Java, JavaScript , Php etc