The correct option is C Fe-S
Phytochromes are blue-green, the proteinaceous pigment that is involved in physiological responses to light and function by two interchangeable forms depending on the ratio of red to far-red light. F1 particles of ATP synthase are involved in ATP synthesis during chemiosmosis energized by proton-motive force. Fe-S cluster has one or more Fe atom attached to four inorganic sulfur atoms. Because these proteins can accept or donate electrons over a wide range of redox potentials, at least eight iron-sulfur proteins serve as membrane bound electron transfer proteins during ETS in mitochondria. Thus, the correct answer is option C.