Which of the following is not a way that people can use the internet?
a. as a university
b. as a factory
c. as a library
d. as a mall

A factory is not a way that people can use the internet.      

Option B                                                                    

 Explanation:  

Factory needs a labour and helps in the production of the new goods. Anything which needs to be produced is difficult for internet to play a role in it.The best thing about internet is that it can help us to store the things and let us now how a factory can be made. But a factory earns a place where good are produced with the help of machinery. It helps in building up of trade with machinery. It can be a building or a group of building constructed together and goods are manufactured according to demand and supply.