Final answer:
The molecule that contains a glycosidic linkage type of covalent bond is 4. The option (C) is correct.
Step-by-step explanation:
The molecule that contains a glycosidic linkage type of covalent bond is 4.
A glycosidic bond is a covalent bond that forms between two monosaccharide molecules to create a disaccharide. This bond is formed through a dehydration synthesis reaction, where a hydroxyl group from one monosaccharide reacts with a hydroxyl group from another monosaccharide, resulting in the formation of a covalent glycosidic linkage.
For example, in maltose, the glycosidic bond forms between the alpha position of glucose and the beta position of another glucose molecule, creating an alpha-1,4-glycosidic bond. Therefore, option (C) is correct.