Final answer:
The line is from Shakespeare's play Julius Caesar and is spoken by Cassius, which is not one of the options provided in the question.
Step-by-step explanation:
The quote "The breaking of so great a thing should make a greater crack" is from William Shakespeare's Julius Caesar. It is spoken by the character Cassius, not Caesar, Antony, Cleopatra, or Octavius.
It refers metaphorically to the death of Caesar and the impact it should have on the world, suggesting that something so significant should not pass quietly but with a great upheaval.
The correct answer to the question is not listed among the options provided A) Caesar B) Antony C) Cleopatra D) Octavius, as the speaker of the line is actually Cassius.