Final answer:
The correct answer is c) Dew, referring to the Dew Lap, a distinctive feature found under the lower jaw of a doe, among other animals.
Step-by-step explanation:
The large fatty fold located under a doe's (female deer's) lower jaw is called a Dew Lap. Therefore, the correct answer to your question is c) Dew. The term you are looking for is unrelated to the terms used to describe the external female reproductive structures, which include the labia majora and labia minora, as well as the mons pubis. The dewlap is a distinct anatomical feature often observed in various animals, and in some species, it serves various functions, such as thermoregulation, sexual attraction, or signaling. While similar in name to the labia, the dewlap is not part of the reproductive system, but rather a part of the integumentary system in certain animals.