A researcher is studying different types of cells. In which cell type will he/she encounter the highest number of lysosomes?

Lysosomes are membrane-bound organelles containing digestive (hydrolytic) enzymes that break down waste materials and cellular debris. White blood cells (especially phagocytic ones like neutrophils and macrophages) engulf and digest invading pathogens and dead cells, a process that requires very large numbers of lysosomes. Therefore, among the given options, white blood cells contain the highest number of lysosomes.