This question relates to the book Julius Caesar by William Shakespeare.

Why do some characters speak in prose, while others speak in blank verse? Are there any times where there is an exception to this? When and why did this happen?

I thought it was to distinguish who was noble and who was not. I said that the citizens spoke in prose whilst people such as Brutus, Cassius, and Caesar spoke in blank verse. There may be exceptions to this.. the characters do not necessarily speak completely in either blank verse or prose the entire play.

My answer was marked wrong.... Can anyone help me to at least get on the right path to the correct answer for this question? It would be very much appreciated...