Which sentence describes a notable difference between an epic and a ballad? А. An epic features many characters whereas a ballad has only a few characters.
B. An epic relies heavily on dialogue whereas a ballad has little or no dialogue.
C. An epic spans a significant period or locale whereas a ballad is limited in scope.
D. An epic talks about the exploits of kings whereas a ballad is a story about commoners.

can you give me a hint

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.  

the answer is luis.

  someone can be considered a dynamic person by being energitic and forceful, but other aspects of being dynamic is having a lot of ideas and enthusiasm. luis his little brother with his homework, and later he teaches his younger brother how to ride a bike without training wheels, which takes a lot of patience, dedication and involvement.

the sound a train makes as it blows it horn is the correct answer i believe