Take a look at these sentences and identify what was changed.
although mechanical problems prevented the bicyclist from finishing first in the race, his success through determination and willpower is encouraging for others who wish to follow in that same course.
mechanical problems prevented the bicyclist from finishing first in the race. however, his determination and willpower will encourage other cyclists.
a.
changed sentence length
b.
changed one sentence to a subordinate clause
c.
changed one sentence to a phrase
d.
changed to two compound sentences

i think the answer is c.  

ich statement best shows a problem in travels with charley?

one sharp difficulty presented itself. in the intervening twenty-five years my name had become reasonably well known.

this being so, my trip demanded that i leave my name and my identity at home.

i had to go alone and i had to be self-contained, a kind of casual turtle carrying his house on his back.

with all this in mind i wrote to the head office of a great corporation which manufactures trucks.

put the trash into the back of the truck and drive the truck to the back. then you must unload the truck.