The answer is a.1. Digestion of cellular wastes.2. Destroying harmful chemicals when they enter the cell.1. When the cell absorbs something (like - glucose) it breaks them down to simpler substances (like - carbohydrates).2. When a bacteria or virus enters the cell they have to destroy their cell membrane so that the cell can dissolve its useful remains and dispose off the harmful remains.

The main function of lysosomes is:
- Digestion: Lysosomes are responsible for digesting various materials within the cell. They contain enzymes that break down macromolecules, such as proteins, carbohydrates, and lipids, into smaller molecules that can be used by the cell for energy or other purposes.
- Cellular Waste Disposal: Lysosomes also play a crucial role in removing and recycling cellular waste. They can engulf and break down damaged organelles, cellular debris, and foreign substances that enter the cell.
- Autophagy: Lysosomes are involved in a process called autophagy, which is the degradation and recycling of unnecessary or dysfunctional cellular components. This helps maintain cellular homeostasis and prevents the accumulation of damaged molecules or organelles.
- Cellular Defense: Lysosomes contribute to the cell's defense mechanisms by destroying invading microorganisms, such as bacteria or viruses, through a process known as phagocytosis. They fuse with the engulfed particles, forming a phagosome, and then release enzymes to break down and neutralize the pathogens.
- Programmed Cell Death: Lysosomes also play a role in programmed cell death, or apoptosis. They release enzymes that degrade the cell's components, leading to its controlled destruction and removal.
In summary, the main function of lysosomes is digestion, cellular waste disposal, autophagy, cellular defense, and programmed cell death. They are essential for maintaining the overall health and functionality of the cell.

Option B is correct...