Understand 'cis' relates to a person's core sense of their own gender matching their birth sex. His cis identity means his gender expression aligns with masculine traits from birth.
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Not 'Trans'
'Cis' is often used in contrast to 'trans', which relates to identities not matching birth sex. As a cisgender woman, she doesn't experience the same issues as a transgender peer.
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Context Awareness
Usually used in discussions about gender identity, rights, or inclusivity. The form asked if she was cis or trans to ensure inclusivity.