Final answer:
Chlorophyll a reflects green and yellow light.
Step-by-step explanation:
Chlorophyll a, the pigment present in chloroplasts of plants, reflects green light and absorbs wavelengths from either end of the visible spectrum, specifically blue and red light. This is because chlorophyll a absorbs these wavelengths to drive the process of photosynthesis, but it does not absorb green light, allowing it to be reflected, giving plants their green color. So, the correct answer is b) Green and yellow are reflected by chlorophyll a.