Final answer:
Hannah should use thick materials to represent the papillary and reticular layers of the dermis in her three-dimensional skin model.
Step-by-step explanation:
Hannah needs to find thick materials to represent the papillary and reticular layers of the dermis, which together are 25 times thicker than the epidermis. The correct answer to represent the layers of the dermis in her model is A) Papillary and reticular. These two layers are the primary structural components of the dermis, with the papillary layer being the thinner, more superficial portion that interlocks with the epidermis, and the reticular layer being the thicker, deeper portion that provides strength and elasticity to the skin. These layers are where key events happen that are significant for esthetics, such as collagen and elastin production and distribution of blood vessels.