Topic: Gender (লিঙ্গ),

Best Answer Explained in Below-:

The term "mare" refers specifically to an adult female horse. To identify its masculine counterpart, we look for the male equivalent within the same species. The correct answer from the given options is "C) Horse," as it signifies the general term for the species that includes both male and female members.

In equestrian terminology, the male horse is simply referred to as a "stallion" when he's intact (not castrated) or a "gelding" if he has been castrated. However, when addressing the broader category, "horse" encompasses both genders.

The other options, such as "A) Master," "B) Monk," and "D) Hart," do not relate to the gender comparison of "mare." "Master" typically refers to a male in a position of authority, "Monk" describes a male member of a religious community, and "Hart" refers to a male deer. Therefore, "C) Horse" is the most accurate term to describe the masculine gender of "mare" within the context of horse classification.