The correct answer is C. Sabeer Bhatia.
Sabeer Bhatia is an Indian-American entrepreneur who co-founded Hotmail with Jack Smith in 1996. Hotmail was one of the first web-based email services, and it quickly became one of the most popular email services in the world. In 1997, Microsoft acquired Hotmail for $400 million.
Shawn Fanning is an American entrepreneur who co-founded Napster in 1999. Napster was a peer-to-peer file sharing service that allowed users to share music files for free. Napster was shut down in 2001 after a legal battle with the Recording Industry Association of America (RIAA).
Ada Byron Lovelace was an English mathematician and writer who is considered to be one of the first computer programmers. She worked with Charles Babbage on his Analytical Engine, and she wrote a set of instructions for the Analytical Engine that could be used to calculate Bernoulli numbers.
Ray Tomlinson is an American computer scientist who is credited with developing the first email program in 1971. He also developed the @ symbol, which is used to separate the user name from the domain name in an email address.