No idea what your answer choices are, but.
Photophosphorylation is a process that occurs during photosynthesis in plants. It is the conversion of ADP (Adenosine Diphosphate) into ATP (Adenosine Triphosphate) using light energy. ATP (Adenosine Triphosphate) is the energy currency of life of all living organisms. Without ATP, cells will not be able to perform their proper functions.
Through the process of phosphorylation, light energy is used to create electron donors and electron acceptors that move spontaneously through the process of electron transport chains.