Which type of skin is hairless and covers the hands and soles of the feet, having well-developed dermal papillae?

The type of skin that is hairless and covers the hands and soles of the feet, characterized by well-developed dermal papillae, is indeed thick skin. Thick skin contains a greater number of cell layers in the epidermis compared to thin skin, which contributes to its durability and resilience. The presence of dermal papillae enhances the grip and tactile sensitivity in these areas, making thick skin well-suited for the high levels of abrasion and friction that the hands and feet experience.

Thin skin, on the other hand, is found on most of the body and does not have the same level of papillae development, nor does it lack hair follicles entirely. Rough and hairy skin options are not applicable since they do not specifically refer to the particular characteristics of skin in the hands and soles. Thus, thick skin accurately describes the specific skin type in this context.