Answer:
The energy carried by an electromagnetic wave is proportional to the frequency of the wave. The wavelength and frequency of the wave are connected via the speed of light: Electromagnetic waves are split into different categories based on their frequency (or, equivalently, on their wavelength).
Explanation:
The answer is D, all responses are correct
1. Release of gases
2. Bubbling
3. And change in color- this one can also be for a physical change.
Hope this helps.
I think a, im not a 100% sure tho!!!