Final answer:
The correct answer is B, which aligns with the classical four element theory that associates fire with heat, air with dryness, water with moisture, and earth with cold.
Step-by-step explanation:
The so-called four element theory is not related to modern atomic theory, which deals with atoms, molecules, and their subatomic particles. Instead, it is a classical concept, predating the understanding of chemistry and physics that we have today. This ancient theory associates distinctive qualities with each of the four elements: fire is associated with being hot, air with being dry, water with being moist, and earth with being cold.
Therefore, the correct answer to the student's question is B. Fire is hot, air is dry, water is moist, and earth is cold.