Which answer is a correctly punctuated compound sentence?
a. my cousin's truck is old and battered, but it takes him where he needs to go.
b. my cousin's truck is old and battered but it takes him where he needs to go.
c. my cousin's truck is old and battered it takes him; however, where he needs to go.
d. my cousin's truck is old and battered, it takes him, however, where he needs to go.
c?

if you want me to check your answer i agree with what you put. i read the story

sentence lenght varies according to word choice.you select which word to use and that will require to use other expressions that collocate with the word chosen.sentence length will vary   according to the choice of words you make to express your ideas.  

which one is underlined?

i know 2 is c.

i'm leaning towards a for 1.