25. unlike the market for shirts at the local department store, the market for securities can experience significant upswings and downswings in values in the same day. program trading allows for thousands of trades to occur simultaneously. to prevent large, sudden drops in the value of securities markets, electronic systems rely on to temporarily close program trading.

Advertisers are usually very conscious of their audience. choose an issue of a popular magazine such as time, sports illustrated, vanity fair, rolling stone, or the like. from that issue select three advertisements to analyze. try to determine the audience being appealed to in each advertisement and analyze the appeals used to persuade buyers. how might the appeals differ is the ads were designed to persuade a different audience.