Which of the following is a correct pair of masculine and feminine gender?

Stallion:Mare

The correct pair of masculine and feminine gender is Stallion:Mare. The word stallion is a masculine noun that refers to an adult male horse. The word mare is a feminine noun that refers to an adult female horse.

The other options are incorrect.

• Horse:Stallion is not a correct pair of masculine and feminine gender. The word horse is a gender-neutral noun that refers to an adult male or female horse.
• Gander:Geese is not a correct pair of masculine and feminine gender. The word gander is a masculine noun that refers to an adult male goose. The word geese is a plural noun that refers to a group of geese, regardless of gender.
• Viceroy:Viceroy is not a correct pair of masculine and feminine gender. The word viceroy is a masculine noun that refers to a male ruler who represents a monarch in a colony or province. There is no feminine equivalent to the word viceroy.