Final answer:
The coffee-maker requires more energy than reheating in a microwave.
Step-by-step explanation:
When comparing the energy required to brew 12 cups of coffee in a coffee-maker versus reheating 12 cups in a microwave, the coffee-maker requires more energy. This is because the coffee-maker uses both conduction and convection to heat up the water and brew the coffee. Conduction occurs as the hot plate of the coffee-maker transfers heat to the coffee pot, and convection happens when the hot water rises to the top of the pot and drips over the coffee grounds. On the other hand, reheating in a microwave primarily relies on radiation to transfer heat to the coffee, which is less efficient than the combination of conduction and convection used in a coffee-maker. Therefore, option A) The coffee-maker requires more energy is the correct answer.