The correct option is C Cyclic photophosphorylation occurring in the stroma thylakoid membrane
The image given above is the representation of cyclic photophosphorylation that occurs in the membrane of stromal lamellae of chloroplast. During cyclic photophosphorylation, only PS-I is involved but not PS-II. The reaction centre of PS-I absorbs light of wavelength 700 nm and releases electrons which pass through the electron transport system and are cycled back to the reaction centre of PS-I. During cyclic photophosphorylation, there is only synthesis of ATP but not NADPH unlike non-cyclic photophosphorylation where both ATP and NADPH are synthesised. This process usually occurs when light of wavelength beyond 680 nm is available.