Final answer:
The final stage of sexual identity development usually occurs in young adulthood, a time when individuals often form intimate relationships and may feel more secure in disclosing their sexual identity.
Step-by-step explanation:
The final stage of sexual identity development, which includes acceptance and disclosure, often occurs in young adulthood. According to current scientific understanding, individuals typically become aware of their sexual orientation between middle childhood and early adolescence. During puberty, sexual and physical maturation occurs, and some may be prepared to announce their sexual orientations at this time. However, due to societal norms, not all may feel ready or willing to do so. By the time they reach young adulthood, many people engage in establishing intimate relationships and may feel more comfortable with self-disclosure of their sexual identity. While awareness of sexual orientation can begin in middle childhood to early adolescence, the process of accepting and openly disclosing one's sexual identity is most commonly associated with young adulthood, a period characterized by forming deeper relationships and establishing a career.