Final answer:
A microwave oven is often more energy-efficient compared to other kitchen appliances. When comparing a microwave to a deep fryer, the deep fryer uses more energy due to the significant amount of electrical energy needed to heat large amounts of oil to high temperatures. Hence the correct answer is option A
Step-by-step explanation:
A microwave oven can rank among the more energy-efficient kitchen appliances. This is because microwaves use electromagnetic waves to heat food, which is more efficient than other cooking methods like using a stove or oven.
For example, if you were to compare a microwave with a deep fryer, the deep fryer would use a lot more energy when it is on/running. Deep fryers usually require a significant amount of electrical energy to heat up large amounts of oil to high temperatures.
On the other hand, a microwave uses less energy because it generates heat directly inside the food by exciting water molecules. This method is more efficient as it heats the food directly without wasting energy on heating the air or cookware.
Hence the correct answer is option A