Which of the following aspects is the focus of the fourth paragraph?

What is the role of computers in the production process?

The procurement department is in charge of （）.

The passage is mainly about （）.

The wholesaler obtains higher selling prices for______.

The middleman relieves the producer of______.

We will not be held responsible for any damage which results______ rough handling.

Over a very large number of trials, the probability of an event______is equal to the probability that it will not occur.

If you are an energetic person with strong views as to the right way of doing things, you find yourself______under pressures.

Home to magnates and gangsters, refugees and artists, the city was, in its ______, a metropolis that exhibited all the hues of the human character.