Answer:
C. Photoautotrophic metabolism
Step-by-step explanation:
Chlorophyll helps in the photosynthesis process and it is main site where photosynthesis is happening. During photosynthesis, chlorophyll capture sunlight energy and transform Carbondioxide into glucose , which is the main energy source for an organism. So if the chlorophyll is present in a bacteria, it means it is going through photoautotropic metabolism.