In the U.S., the age-old problem of excessive drinking is taking a disturbing new turn and affecting new kinds of victims. On a New York subway train, a school-bound 15-year-old holds his books in one hand, a brown paper bag containing a beer bottle in the other. He takes a swig, then passes the bottle to a classmate. In a San Francisco suburb, several high schools freshman show up for class drunk every morning, while others sneak off for a nip or two of whiskey during the lunch recess. On the campuses the beer bash is fashionable once again, and lowered drinking ages have made liquor the high without the hassle. (Time. April 22, 1974.) Choose which pattern of organization is used in the paragraph