B . They illustrate a strict adherence to social rules.
<span>(C) is the most correct answer. With new journalism, there are many more people who hold the title of "journalist" in the current climate. This makes for a great deal more competition in the race to get a scoop out to the public. Finding the hot new story and being the first to report it is becoming tougher than ever.</span>
"<span>How many times greater is the acidity of hydrochloric acid than vinegar?" is the best option from the list, since this is what the chapter is primarily dealing with. </span>