Which scientist was challenged to a duel of sausages?now!

Ineed to know why d is the correct answer asap

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Which statement best compares aerobic and anaerobic respiration