Which statement about audience or purpose is true?
a) audience and purpose are decided on during the prewriting stage.
b) the purpose for a piece of writing becomes clear after you begin writing your first draft.
c) audience is predetermined before you write, while purpose is not
d) it is safe to assume that the audience for your writing will have the same background knowledge of a subject that you do.

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.

black citizens were denied access to the same public facilities as whitesun.

marriages between white and nonwhite citizens were forbidden.

nonwhite citizens were required to carry identification papers with them at all times.

do you have a story that comes along with this?   i cannot answer the questions about this story if i do not know what the story is.   i will look up the story, read it real quick, and then answer the questions for you if you would like.

-ttl