Here's why:

* High Turnover Rate: Epithelial tissue lines the surfaces of the body, both inside and out. It's constantly exposed to wear and tear, so it needs to be replaced frequently. This high turnover rate requires a lot of cell division.

* Examples: Examples of epithelial tissue include skin, lining of the digestive tract, and the lining of blood vessels.

* Other tissues: While other tissues like connective tissue and muscle tissue have some degree of cell division, it's significantly less frequent than in epithelial tissue.

Important Note: While epithelial tissue has the highest rate of cell division, it's important to remember that all tissues have some degree of cell division to maintain their integrity and function.