Dramas are meant to be read, but also heard and

a. delivered.
b. seen.
c. analyzed.
d. memorized.

Although most of these answers can be true, there is still only one correct answer - dramas are meant to be read, but also heard and B. seen. In the past, playwrights have only written plays to be read by their audiences, and didn't think about the possibility of them being performed on stage. However, later, when people realized that people would enjoy to see and hear plays as well, they started to show them to them. This was the case especially because many people in the past couldn't read, but they could still enjoy watching a play.

The answer is most likely d