Topic: Gender (লিঙ্গ),

Best Answer Explained in Below-:

In the context of linguistic gender, common gender refers to nouns that can refer to individuals of either male or female sex without specifying one. Among the options provided—prince, ewe, spouse, and mare—the term "spouse" stands out as a common gender noun.

"Prince" (A) specifically denotes a male royal figure, while "ewe" (B) refers exclusively to a female sheep, and "mare" (D) indicates a female horse. Each of these terms distinctly identifies a gender—male or female—and does not accommodate both sexes.

In contrast, "spouse" (C) refers to a partner in marriage, regardless of gender. A spouse can be either a husband or a wife, making it versatile in its use across different contexts. This quality of being applicable to both males and females is the defining characteristic of a common gender noun. Therefore, "spouse" is the correct answer as it embodies the essence of common gender by inclusively representing individuals of any gender in a marital relationship.