The answer is definitely D: A web browser
To connect to the internet, you need the following things: A computer which comes with an operating system, Hardware (a modem or router supplied by the ISP), the ISP itself, and client software (the web browser). These things work together. Browsers get web pages and display them on your computer. It is the tool used to access the World Wide Web. The web browser itself is not the internet, it only helps you connect and view websites.