Question

in the epidermis, the ______ is the deepest layer.
a stratum spinosum
b stratum basale
c stratum corneum
d stratum lucidum

Explanation:

The epidermis has several layers. The stratum basale is the deepest layer. It contains stem cells that divide to produce new keratinocytes. The stratum spinosum is above the stratum basale. The stratum corneum is the outermost layer. The stratum lucidum is present in thick skin (like on the palms and soles) and is above the stratum granulosum (not an option here but for context).

Answer:

B. Stratum Basale