Concept:Hart means a male deer (नर हिरण). Its feminine gender is Roe, which refers to a female deer (मादा हिरण).Explanation:- The word 'Hart' is used for a male deer, especially a red deer stag.- The feminine form is 'Roe', also known as a female deer (हिरणी).- Other options: Filly is a young female horse (बछेड़ी), Sow is a female pig (सुअरिया), and Goose is a female bird (हंस). None are correct.Answer:Roe (Option C)