Complete sentence. The comma is used the right way so it wouldnt be a comma splice, and if you replaced the comma with a period it would be wrong, so not a run on. That is why it is a complete sentence
The correct answer is C. The cultural beliefs of the characters. Cultural beliefs are always related to a certain period in time and keep changing. This is why we can find out what the historical context is by analyzing what the society values. The other answers are mostly universal.
The soothsayers says to Caesar "Beware the ides of March!"