The only noun among these examples is C, love.
A is a conjunction.
B is an adverb.
D is an adjective.
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 don't know what happened
Mr Lo is a doctor and he takes care of sick people