Which one is in feminine form? ?

The correct answer to the question "Which one is in feminine form?" is D) Doe. A "doe" specifically refers to a female deer, distinguishing it from the male counterpart, which is called a "buck." Understanding animal gender terminology is essential in biology and zoology, as it helps clarify discussions regarding species behaviors, reproduction, and ecological roles.

In contrast, the other options do not represent feminine forms. A) "Deer" is a general term that can refer to both male and female animals, making it gender-neutral. B) "Bull" specifically denotes an adult male of certain species, particularly cattle and other hoofed mammals, while the female counterpart is known as a "cow." Similarly, C) "Horse" is a broad term that includes both males, called "stallions," and females, known as "mares."

Thus, "doe" stands out as the only term in the list that unequivocally identifies a female animal, making it the correct answer in the context of gender-specific animal nomenclature.