The correct answer is B. 1985 in Berkeley, California.
The first web server was built in 1985 at the University of California, Berkeley, by Tim Berners-Lee. It was a NeXT computer running the Unix operating system. The server was used to host the first web pages, which were created by Berners-Lee.
The other options are incorrect. Option A is incorrect because the first web server was not built in 1990. Option C is incorrect because the first web server was not built in 1988. Option D is incorrect because the first web server was not built in 1947.
The first web server was a major breakthrough in the development of the World Wide Web. It allowed for the first time for web pages to be stored on a server and accessed by users over the internet. This made it possible for people to share information and ideas with each other in a new and innovative way.
The first web server was a simple application, but it had a profound impact on the world. It is one of the key technologies that has made the internet the global phenomenon that it is today.