Which of the following sentences has an error in capitalization?
a. that day, across the great river, we got our first view of the washington monument.
b. we crossed the snake river and miles of nothing much on our way to abilene.
c. my father has decided to retire in the fall of next year.
d. they say the power river is a mile wide and an inch deep.

the mending wall was written by robert frost

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.