Which sentence most needs to be revised because its description is too vague?

  ! i need it ! the daughters of the revolution eventually admitted african american to their hall.which best analyzes how this detail supports the meaning in "marian anderson sings"? a)it shows that african american performers would never be able to perform in some theaters. b)its show that an era of discrimination on unfair treatment of african american was finally over. c)it shows that marian anderson had ease discrimination for for african american performers. d)its shows that revolutionaries are not open to new ideas.

Iopened the door quietly,then stood in the doorway rewrite using ..ing participle

Jane addams's memoir, twenty years at hull-house, describes her work with