Here's why:

* Mitosis is a type of cell division that produces two identical daughter cells from a single parent cell. This is crucial for the body to maintain a constant supply of blood cells, as they have a limited lifespan.

* Meiosis is a type of cell division that produces gametes (sperm and egg cells). This process results in cells with half the number of chromosomes as the parent cell, which is essential for sexual reproduction.

Since blood cells are not involved in sexual reproduction, they are produced through mitosis.