How is homosexuality decided at the time of birth?

The exact mechanisms determining sexual orientation, including homosexuality, are not fully understood and are believed to involve a complex interplay of genetic, hormonal, environmental, and social factors. Research suggests that biological influences, such as genetic predispositions and prenatal hormone exposure, may play a significant role in shaping sexual orientation. However, it is important to note that sexual orientation is not "decided" at birth in a straightforward manner; rather, it may develop over time as individuals grow and understand their identities. Ultimately, sexual orientation is a natural variation of human experiences and cannot be changed or chosen.