Gender, as a concept in socialisation, primarily refers to what type of…

In sociology, sex refers to the biological attributes a person is born with (chromosomes, anatomy, hormones), while gender is the set of roles, behaviours, and traits that a society assigns to being male or female. Gender attributes are learned through socialisation — through family, peer groups, schooling, and media — so they vary across cultures and historical periods rather than being fixed by biology.

In the question, the phrase “as a concept in socialisation” points directly to this learned, socially transmitted dimension of gender rather than to biology. A child comes to understand which behaviours are treated as “masculine” or “feminine” through the norms modelled and reinforced by the people and institutions around them, and these norms differ from one society to another and change over time — the defining mark of a culturally constructed characteristic.

Checking each option against this definition:

• Biological characteristics are the physical/anatomical attributes present at birth (chromosomes, reproductive anatomy); this describes sex, the axis from which the sociological concept of gender is explicitly distinguished.

• Universal human characteristics would be identical across every society regardless of culture or era; documented gender roles and expectations instead vary considerably between societies and historical periods.

• Culturally constructed characteristics are produced, taught, and reinforced through a society's institutions and socialisation processes — family, school, peer group, and media — rather than being fixed from birth.

• Innate characteristics are present from birth without requiring social learning; this sits in direct tension with socialisation, which refers to the ongoing process by which attributes are learned from society.

Gender, as a concept in socialisation, is therefore best understood as a set of culturally constructed characteristics — produced and reinforced through the socialisation process — which is confirmed by WHO's and UNESCO's definitions of gender as socially constructed and learned, in contrast to the biological attributes of sex.