Which statement is the best example of a claim?

a. "you won't understand those equations until you're older."

b. you have to follow your dreams, and that you should never give up just because someone says that
you can't accomplish your goal.

c. .i've mastered those equations, played forward for two years, and am almost ready to play that piano piece.

d. when i was young, it seemed like everyone was always trying to tell me what i couldn't do.

motion can be transfered from one object to another by having an objetct in motion push or hit it

i would have to say "a" or "d".

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.