α-1, 6 glycosidic linkage.
Explanation:
Starch is present in plant cells and the important carbohydrate. Starch is made of the two sub units known as the amylose and amylo pectin that contains glucose as monomer unit.
The amylopectin contains both the linear and branched chain structure. The α-1, 6 glycosidic linkage is involved in the formation of the branched structure of the amylopectin. The structure of amylopectin is similar to the animal carbohydrate.
Thus, the correct answer is option (d).
Explanation i think they should give them a test so if they get the answer wrong he could say the right answer or he should make it in to a song or a riddle or a game