the correct answers are D, E on PLATO. %100 correct.
D.The white man’s happiness cannot be purchased by the black man’s misery.
E.It is evident that the white and black "must fall or flourish together."
I believe it would be declarative because it is stating a fact.
Interrogative is a question and will allmost always end in a question marks.
Imperative is an order and will almost always end in a period.
Exclamatory shows excitement or concern ends most often with a exclamation mark.
Any thing u have to write or it Jus has to be about that