As a part of a science class, a clear pot of water with heat sensors is placed above a burner. The water begins to boil, and a student observes that the hottest water at the bottom of the container seems to move upward and the cooler water continuously moves in to take its place as illustrated below. Which of the following best explains this cyclical movement of the water?A. The heat from the burner causes air bubbles to form at the bottom of the pot, and the air bubbles carry the water upward. Water then flows in to fill in the space once occupied by the bubbles.B. Heat moves through the water by the process of conduction, causing heat to spread progressively upward from the hotter region near the burner, cooler water moving to take its place.C. Heat is convected through the water, causing the hotter, less dense water to rise. Cooler, denser water then moves in to take its place.D. Radiation of heat near the center of the pot causes cyclonic swirling in the water, which moves in a path around the axis of heat emission.

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