Answer:
NADPH
Explanation:
The formation of NADPH takes place in the following steps:
1. Electrons are transferred to the protein, ferrodoxin by the help of photosystem I in the presence of light.
2. The electrons are shuttled by photosystem II to replace the electrons thus lost by photosystem I.
3. The electrons by ferredoxin are transferred to NADP+.
4. NADP+ thus gets reduced and forms NADPH.
