Dorothy next part of the story

  ! 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.

Based on context, the word “insoluble”most likely means?

Yes or no? biology is the study of rocks and minerals.