The correct option is A digest stored proteins, fats.
Functions of Vacuoles:
- To maintain the osmotic pressure of the cell.
- To store metabolic byproducts and end products. (Glycogen, proteins, water etc).
- In animal cell, they store waste products and food, while in amoeba it stores food before digestion.
- In plant cell, vacuoles are full of cell sap and provide turgidity, rigidity to them
During starvation, lysosomes digest stored proteins, fats.