Do all human cells divide at the same rate throughout life?

No, as you get older the rate at which your cells divide, slows down. Like when your little your cells are dividing at a fast to help your body grow, however, when you are an adult your cells do not need to do this anymore and only divide to replace damaged cells or cells that have died.

What is the example? i’ll be happy to answer if you can tell me : )

Your answer is a because that is true