Reading the following passage and choose the best answers.

THE IMPORTANT OF COMPUTERS

Many of the things we do, depend on receiving information from other people. Catching a train, making a phone call or going to the cinema all involve information (1)_______ is stored, processed and communicated. In the past, this information used to (2)_______kept on paper in (3)_______form of, for example, books, newspapers and timetables. Now more and more information is put on computers.

Computers play a (4)_______in our everyday lives. Consider the use (5)_______ computers in both shops and offices. Big shops, especially chain stores with branches all (6)_______ the country, have to deal with very large amounts of information. They have to make sure (7)_______ are enough good on the shelves for customers to buy. They need to be able to re-order before stocks (8)_______ out, to decide which things are selling well  and (9)_______ on. All these processes are performed quickly and efficiently (10)_______computers.

(1)..................

• A. 
  which
• B. 
  that
• C. 
  who
• D. 
  both a and b