How do the authors use statistics to support their claim

To show that even though social media use was limited, it was often connected to politics.

Explanation:

The excerpt mentions that the majority  of the population in Egypt doesn't use social media but that people with college education use social media to get political information, so the statistics try to support the argument that the use of social media in Egypt has been connected to politics. This because they were used to let the world know what was happening, even though they are not widely used by the population in the country.

well stockyards mean a large yard containing pens and sheds, typically adjacent to a slaughterhouse, in which livestock is kept and sorted. and i'm assuming that by party you   mean a large group of people which does make sense because chicago is a very crowded place much like new york. stockyards tend to take up a lot of room due to needing the area for pens to keep animals in and the fact that stockyards are usually right by slaughterhouse where they process and distribute the product. so its much like a zoo but with some dead animal products close by.

the correct answer is b. so you can tailor your resumé to the position.

it is important before sending your resumé for you could add some extra information relating to former jobs that might you get a higher possibility to be hired.

may be the company is looking for an experienced person, and showing you have worked in the area they are looking a person for may give you more positive points!