Which are examples of an expository writing style? Select 3 options. More than a hundred million e-mails are sent around the world each day, and they are all vulnerable to interception. Other attacks include the use of viruses and Trojan horses. But how can you bury a mountain of soil? Before long, the army engineers came up with a plan that would allow them to do just that. Only a small fraction of the information flowing around the world is securely encrypted. Hall well understood the gamble the Germans were taking. When the war began, Elizabeth Van Lew was considered a southern "spinster."