Question

which stratum forms epidermal ridges? options: stratum basale, stratum granulosum, stratum spinosum, stratum corneum, i dont know yet

Explanation:

Epidermal ridges are formed by the stratum basale (the deepest layer of the epidermis) as its cells project into the dermis, creating these ridges. Other strata (granulosum, spinosum, corneum) have different functions and don't form epidermal ridges.

Answer:

A. Stratum basale