The right answer is B). photosynthesis.
Photosynthesis is a biosynthesis of transforming light energy into organic compounds. Light, in the form of photons, is captured by a colored pigment associated with a mineral or organic electron donor, and allows the use of mineral material for the synthesis (manufacture) of organic compounds: it is the photophosphorylation phase photosynthesis. Cytochromes play a role of electron carrier.