Gender involves a sense of one's own gender, including knowledge, understanding, and acceptance of being male or female.

gender identity

Explanation:

Gender identity -  

It refers to the identification of the personal gender , on the basis of the person's social identity in the society , is referred to as gender identity.  

The society is majorly bifurcated into two major genders , i.e. , male and female , and according to the specific characteristic the person is either a male or a female , irrespective of some other characteristics.  

Hence, from the given information of the question, the correct term is gender identity.

can you explain it better

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.