When Coy Mathis, a transgender girl, was six years old, she was not allowed to use the girls' bathroom in her school. Instead, she was allowed to use the gender-neutral restroom in the teacher's lounge. In 2013, Coy's parents successfully sued the school district to allow Coy to use the main girls' bathroom in the school. This example illustrates the idea that .

Gender is created socially and belongs to complex mechanism of socialization.

Explanation:

Gender is the identity of any individual that is socially defined through physical characteristics and personality.Society majorly consider male and female as major gender and rest are considered as neutral genders .Society may behave in absurd and negative manner towards other such genders.    

According to the question,Coy's situation being a transgender girl and in case of using gender neutral washroom or girls bathroom is based upon social definition of gender.As society is a complex group of individual where people defined gender as per their socialization and personality, Coy is objected on use of girls bathroom and thus, her parent's sue school for letting her use girls washroom. .

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