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The answer is stratum basale
Epidermis is made of 5 layer of skin. The deepest layer of epidermis is called stratum basale. The cell in this layer will keep dividing and move to the upper layer. Since the cell is dividing, you will find nucleus inside the cell of this layer. Upper layer of skin slowly become keratinized and lose their organelle.
In the given case, the stratum basale would be the final layer of the epidermis to get injured.
What is stratum basale?
It is the deepest layer of the five layers of the epidermis, which is the outer covering of the skin in mammals. It is a single layer of cuboidal or columnar basal cells. It is also referred to as stratum germinativum.
The stratum basale is situated just over the papillary layer, which is the thin top layer of the dermis. The papillary layer constitutes blood vessels and connective tissues, which provide nutrients to the epidermis. So, when the splinter penetrates the sole of the foot, that is, almost to the papillary region of the dermis, the basale layer would get injured.
Thus, the correct answer is stratum basale.
Find out more information about stratum basale here:
https://brainly.com/question/8821558
