The correct option is B Fucoxanthin
Brown algae or Phaeophyceae have pigments like chlorophyll a , chlorophyll c and fucoxanthin. It is a dominant pigment which give brown or olive color to brown algae. Phycocyanin and Phycoerythrin are pigments present in red algae or Rhodophyceae. Haematochrome is yellow , orange or red pigment present in certain green algae or Chlorophyceae. Therefore option B "Fucoxanthin" is correct option