Answer:
C. To make energy-carrier molecules like NADPH
Explanation:
In the light reaction of photosynthesis, Photosystem I is the second photosystem which is known as plastocyanin-ferredoxin oxidoreductase or PSI takes place in green plants or other photosynthetic organisms.
It is a protein complex that utilizes the trapped light energy by chlorophyll to produce high energy carriers such as NADPH. NADPH synthesis is a primary role of the PSI.
Thus, C. To make energy-carrier molecules like NADPH
