What does Hansberry mean when she says, “Though it be a thrilling and marvelous thing to be merely young and gifted in such times, it is doubly so, doubly dynamic—to be young, gifted and black.”?

d

explanation:

1. negative, complain without fixing anything.

2. she disagrees with them.

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.