Answer:
(b) by dehydration synthesis
Step-by-step explanation:
Carbohydrate polymers are made of various monosaccharides bonded together by glycosidic bond. Formation of glycosidic bond between two or more monosaccharides is an example of dehydration synthesis bond formation is accompanied with release of one molecule of water.
For example: two glucose units are bonded together by glycosidic bond and one water molecule is released during bond formation.