Answer:
B. Intracellular
Step-by-step explanation:
Lysosomes are single membrane bound organelles present in eukaryotic cells. The unicellular eukaryotes such as amoeba engulf the food with help of food vacuole. The food vacuole fuses with lysosomes to form the digestive vacuole wherein the lysosomal enzymes carry out the digestion of ingested food. Since this digestion process is carried out inside the cell, it is called as intracellular digestion.