The correct option is C Thyllakoids
A thylakoid is a membrane-bound compartment inside chloroplasts. They are the site of light-dependent reactions of photosynthesis. There are four major protein complexes in thylakoid membrane as photosystem II, cytochrome b6f complex, photosystem I and ATP synthase. These four complexes work together to ultimately create the energy products ATP and NADPH.
So, the correct answer is option D.