Final answer:
Melanoma of the vagina typically occurs in the middle third.
Step-by-step explanation:
The answer to the question is b) Middle third.
Melanoma of the vagina typically occurs in the middle third of the vagina. Melanoma is a rare type of skin cancer that develops in the melanocytes, the pigment-producing cells. It is important to note that melanoma can occur in other locations as well, such as the skin.