Final answer:
Carotenoids function by capturing and transferring light energy to chlorophyll in photosynthesis.
Step-by-step explanation:
Carotenoids serve multiple functions in photosynthesis. One of their main functions is to capture and transfer light energy to chlorophyll, the primary pigment involved in photosynthesis. Carotenoids absorb light in the blue region of the electromagnetic spectrum and transfer the energy to chlorophyll, which then uses it to drive the process of converting carbon dioxide into carbohydrates during the Calvin cycle.