1. Which of the following statements best describes a central idea of the text?
A. "Terry stops" are a justifiable practice because law enforcement must protect their communities from potential danger.
B. The decline of “Terry stops” has caused a clear and significant increase in national crime rates.
C. It is difficult to ensure that “Terry stops” are not “unreasonable,” and that they target actual criminals.
D. “Terry stops” have contributed to a decline in crime in all major cities in the United States.

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.