The correct answer is: D. Washing machine
A washing machine is a major appliance that uses a lot of electricity. It can use up to 5,000 watts of power, which is more than a television set, toaster, or vacuum cleaner.
A television set uses about 300 watts of power. A toaster uses about 1,000 watts of power. A vacuum cleaner uses about 1,200 watts of power.
The amount of power that an appliance uses depends on its size and the type of motor it has. A washing machine has a large motor that needs to be able to move a lot of water and clothes. This requires a lot of power.
A television set has a smaller motor that only needs to move a small amount of weight. This requires less power.
A toaster has a very small motor that only needs to heat up a piece of bread. This requires even less power.
A vacuum cleaner has a medium-sized motor that needs to be able to move a lot of air. This requires more power than a television set, but less power than a washing machine.
In conclusion, a washing machine uses the most electricity of the four appliances listed.