Jesus extended the definition of adultery to include sexual relations between a married man and a woman other than his wife (Mark 10:11-12, Luke 16:18). Other New Testament teachings also understand it that way (1 Corinthians 6:15-16, 1 Corinthians 7:2 ).
Therefore, for Christians, adultery is the sin of a married man having sexual relations with anyone other than his wife or a married woman having sexual relations with anyone other than her husband.
Christians believe in Jesus and his teachings. Jesus condemned adultery which is why Christians condemn it as well.
I believe the correct answer is gender identity disorder.
Body Integrity Identity Disorder (BIID) describes a phenomenon in which physically healthy people feel the constant desire for an impairment of their body. In other words, they are people who want the amputation of one or more healthy limbs or who want paralysis. In some articles, this disorder is compared to gender dysphoria, studying their similarities and differences, and arriving at the conclusion that BIID may be a new type of identity disorder.
I believe the answer is a hypothesis
