Final answer:
The benign proliferation of melanocytes is known as a nevus, or mole, and consists of melanocyte accumulations in the stratum basale.
Step-by-step explanation:
The benign proliferation of melanocytes, which are the pigment-producing cells in the epidermis, is described as a nevus (plural: nevi), commonly known as a mole. Nevus formations are generally benign and consist of accumulations of melanocytes in the stratum basale of the epidermis. The other options provided, solar lentigines and seborrheic keratosis, do not describe a benign proliferation of melanocytes. Solar lentigines, often referred to as age spots or liver spots, result from sun damage and involve the increased production of melanin. Seborrheic keratosis is a noncancerous skin growth that mainly consists of keratinocytes. It's important to monitor moles for changes, as they can sometimes develop into melanoma, which is a serious skin cancer that originates from melanocytes.
The correct answer is a) nevi. Nevi are a benign proliferation of melanocytes, which are pigment cells. They are commonly referred to as moles and appear as small, dark spots on the skin. While nevi are usually harmless, it's important to monitor them for any changes in size, shape, or color, as these could be signs of melanoma, a type of skin cancer.