Final answer:
The tearing of decorations from Caesar's statues by a guard during a protest is an example of civil disobedience.
Step-by-step explanation:
The correct answer to the question is B) Civil disobedience. Civil disobedience is a deliberate and nonviolent act that involves breaking the law as a form of protest. In the given scenario, the guard tearing decorations from Caesar's statues is an example of civil disobedience as it involves breaking the law to express dissent or call attention to an issue.