Because he had finally realized that the plague was stupid and unnecessary therefore he was saying a plague on both your houses as in I hope something bad happens to you guys so you can regret all this
i believe the answer would be fruit grows
The proper use of a conclusion is to restate the main argument or claim so I would go with A). To reinforce the primary claim.
The three values I believe Americans hold are the most popular ones stated in our constitution, "life, liberty, and property/pursuit of happiness"