Read the excerpt: "Teenage caffeine consumption, once limited to sodas and hot chocolate, now has nearly become the norm in the Bay Area and nationally. Though no statistics exist to chart teenage coffee drinkers--the National Coffee Association polls only consumers 18 and older-a drive past any coffeehouse near a high school would show that it's replaced the iconic malt shop of the 50s or 7-Eleven of the 70s as a place to socialize." What is the central idea of the above excerpt?
O Teens no longer hang out at malt shops or 7 Elevens to socialize.
O Teens are drinking more caffeine now than during the 50s to the 70s
O Teens don't realize the amount of hidden caffeine they are consuming. O Teens today are becoming more addicted to coffee both nationally and in the Bay area.

Why does the author's description of the mercury boiler—"the mercury, when vaporized, going into a mercury turbine and then into a condenser, remaining hot enough to generate steam in a steam boiler"—intentionally incorporate such highly technical language? using technical language establishes the expertise of the writer and convey the complex nature of the process being described. using technical language allows the writer to subtly poke fun at those who seek to make basic processes seem overly complicated. using technical language encourages readers to develop deeper and more meaningful personal connections to the information. using technical language lets the writer make clear to readers that the article is intended for readers who are themselves experts on electricity.