3) D
1 – Microwaves do get absorbed by water molecules. An example of this when water molecules in food absorb microwaves from the microwave oven and heat up the food.
2 – The ionising properties of X rays means that they can damage the DNA in the cells of the human body.
3 – Infra red waves do not penetrate matter
Only statements 1 and 2 are correct so D is correct