Which of the four types of tissue is most likely to remain mitotic throughout life?

The answer to this question would be: labile cells.

The labile cells will continue to do mitosis because their old cells need to be constantly replaced by new cells. The example of these cells would be blood cells and epithelial/keratinocyte of the skin. Stable cells only divide when needed and permanent cells won't divide after completely mature.

The correct answer is: making up measurement to record