Correct choice is (c) D – luciferin
To elaborate: In the above reaction, ‘Y’ represents D-luciferin. In the above reaction, ATP released from lysed bacteria reacts with D-luciferin and oxygen in a reaction that produces yellow light in high quantum yield. Ester is the substrate on which chymotrypsin acts. Catalase acts on hydrogen peroxide, whereas uricase acts on uric acid.