Why does a microwave oven heat up a food item containing water molecules efficiently?

Microwaves are heat waves so they always produce heat Infra red waves produce heating in the microwave oven The electric energy heats up the vessel which transfers energy in the oven to water molecules The frequency of the microwaves selected is to match the frequency of water molecules

The frequency of the microwaves selected is to match the frequency of water molecules

The correct answer is Option (4) → The frequency of the microwaves selected is to match the frequency of water molecules