Final answer:
The comedic tool 'Defeat of Expectations' refers to the technique of surprising the audience by subverting their expectations.
Step-by-step explanation:
The comedic tool 'Defeat of Expectations' refers to the technique of surprising the audience by subverting their expectations (option B). In comedy, the element of surprise plays a crucial role in generating laughter and keeping the audience engaged. This can be achieved by setting up expectations and then breaking them in unexpected and humorous ways. For example, a comedian may lead the audience to anticipate a certain punchline but deliver a completely different and unexpected one, resulting in laughter.