The answer is: [D]:
___________________________________________________________
They are often used to combine choppy sentences.
______________________________________________________________
Conjunctions are often used to combine choppy sentences.
____________________________________________________________
Note: The questions asks about CONJUNCTIONS —NOT about "contractions".
____________________________________
Choice "A" is incorrect. They are not used to combine two or more LONG sentences. If sentences are already long, then do not need to be combined with a conjunction.
_____________________________________
Choice: "B" is incorrect. To the contrary, the use of conjunctions actually makes sentences longer.
________________________________________
Choice "C" is incorrect. To the contrary, the use of conjunctions should be used (appropriately, of course) in essays. The use of "contractions" should not be used in essays or formal writing.
________________________________________
Choice "D" is correct. They are often used to combine choppy sentences for better reading and engagement.
_______________________________________________________
Answer:
a. That she has the mark of a criminal, the fleur-de-lis.
Answer:
Mark Twain created his characters based off of real people in his life.
Explanation:
He uses people from both his adulthood and childhood in his works.
Hope this helped :)