The marketing department of a sports supply store wants to estimate the percentage of adults in the town who belong to a gym.

which statement describes a method that will the marketing department accurately estimate this percentage?

take a random sample of adults at the local park, and ask each person whether he or she belongs to a gym. calculate the percentage of the total who say “yes.”

select the store’s first 20 customers every day for one week, and ask each person whether he or she belongs to a gym. calculate the percentage of the total who say “yes.”

take a random sample of the store’s adult customers, and ask what percentage of their friends belong to a gym. calculate the mean of the responses.

take a random sample of adults in the town, and ask each person whether he or she belongs to a gym. calculate the percentage of the total who say “yes.”

the answer will be d because that the only one who is going into town and asking everyone if they belong to that gym.

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.

the third paragraph is the the soltion or ending of a story