Do not worry so much about the why of classification. Classification is important because it is a lens through which to see what is there. It is not intrinsically true in and of itself. Distinctions are important only as vehicles for a common base of communication. All things have symmetry. A reflection has symmetry. Symmetry means organized life. Organized life is what happens when RNA replicates. It is the difference between chaos and order
radiative energy is energy in light. Sunlight carries this form of energy, as do other forms of light including X-rays and radio waves.
Answer:
Mass is the amount of matter in a substance measured in kilograms
The answer is A. I think because that how it shows