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
In a paragraph, essay, or speech, an extended definition is an explanation and/or illustration of a word, thing, or concept.
A learning how to pronounce words correctly