The correct answer is option 3, Ovary. The ovary is a reproductive organ found only in women. It is responsible for producing and releasing eggs, as well as producing hormones such as estrogen and progesterone. The thyroid, mentioned in option 1, is a butterfly-shaped gland located in the neck that produces hormones that regulate metabolism. It is found in both men and women. Option 2, Rtuitaiy, does not correspond to any known anatomical structure, so it is irrelevant to the question. Option 4, Adenoid, refers to a glandular structure located at the back of the nose, which aids in fighting against infections. While the adenoid is more commonly present in children, it can also be found in adults of both genders.