Answer:
Pigment Absorbance at Different Wavelengths
Step-by-step explanation:
Looking at this graph, there are two axes to analyze. On the Y-axis, the percentage of light absorbed is measured for the three different pigments. On the X-axis, the wavelength is measured from 400 to 700 nm.
With all of this in mind, the other answers don't fit considering these two axes. "Pigment Absorbance at Different Wavelengths" fits best in my opinion.
Hope this helped! :^)