Polysaccharides include:a.Starch, glycogen, and fiber.b.Sucrose, fructose, and glucosec.Galactose, starch, and glycogen.d.Lactose, maltose, and glycogen.

To identify which option correctly lists polysaccharides, it's important to understand the definitions and classifications of carbohydrates.

1. Understanding Carbohydrates: Carbohydrates are classified into three main types: monosaccharides (simple sugars), disaccharides (two sugars), and polysaccharides (many sugars). Polysaccharides are complex carbohydrates made of long chains of monosaccharide units.

2. Analyzing Options:

   • Option a: Starch, glycogen, and fiber are all polysaccharides. Starch is used by plants to store energy, glycogen is used by animals for energy storage, and fiber (cellulose) is a structural component in plant cell walls.
   • Option b: Sucrose, fructose, and glucose are monosaccharides or disaccharides, not polysaccharides. Sucrose is a disaccharide made of glucose and fructose, while fructose and glucose themselves are monosaccharides.
   • Option c: Galactose is a monosaccharide, while starch and glycogen are polysaccharides; therefore, this option is not purely polysaccharides.
   • Option d: Lactose and maltose are disaccharides, while glycogen is a polysaccharide. This option also does not exclusively consist of polysaccharides.

3. Conclusion: After reviewing all options, only option a (Starch, glycogen, and fiber) correctly lists items that are all classified as polysaccharides.

Final Answer

Polysaccharides include: a. Starch, glycogen, and fiber.