The life span of a Red Blood Cell (RBC) is approximately 120 days.

Explanation:

• Red Blood Cells, also known as erythrocytes, are the most abundant type of blood cell in the human body.

• The life span of RBCs is relatively short compared to other cells in the body.

• RBCs are constantly being produced in the bone marrow, and old or damaged RBCs are removed by the spleen and liver.

• The average life span of a Red Blood Cell is around 120 days, after which they are broken down, and their components are recycled.

In summary, the typical life span of a Red Blood Cell is approximately 120 days.