Final answer:
Amylopectin is a branched-chain polysaccharide with α-1,4-glycosidic linkages and branching α-1,6-glycosidic linkages, correctly identified by option C.
Step-by-step explanation:
Among the given options, amylopectin is correctly identified by option C: 1,4 alpha glucosidic linkages in addition to 1,6 alpha glucosidic linkages. Amylopectin is a branched-chain polysaccharide that is a component of starch. Its main chain consists of thousands of D-glucose units joined by α-1,4-glycosidic bonds. The branches occur at intervals of every 24 to 30 glucose units and are attached through α-1,6-glycosidic bonds. This structure of amylopectin makes it soluble in water and more easily digestible than its unbranched counterpart, amylose.