Answer: C: intensity I think..
Explanation:
Because:
A: Speed doesn't really have anything to do with the sun and visual light
B: Wavelength Is the distance between the waves.
D: Amplitude is the height of the wave
so out of all the answers it should be C: Intensity
I think
I believe that the answer is either C, or D. They both seem plausible.
Answer:
countries
Explanation:
Take the verb: hold (festivals)