The correct option is
B agarobiose
Agarose is a polymer of agarobiose.
Agarose:-Agarose is a polysaccharide, generally extracted from certain red seaweed. It is a linear polymer made up of the repeating unit of agarobiose, which is a disaccharide made up of D-galactose and 3,6-anhydro-L-galactopyranose.
![996901_625053_ans_8ef15055058c4c689774b443eebc8796.PNG](https://search-static.byjusweb.com/question-images/toppr_ext/questions/996901_625053_ans_8ef15055058c4c689774b443eebc8796.PNG)