2) what may be the reason for a person becoming a homosexual?

The exact cause of homosexuality is not known, but it is likely a combination of genetic, hormonal, and environmental influences. It's important to note that being gay is a normal and natural variation of human sexuality and is not in itself a source of psychological problems. Here are some theories:

1. Genetic Factors: Some research suggests that genetic factors may contribute to homosexuality. Studies comparing identical and fraternal twins have found that if one identical twin is gay, the other has a significantly higher chance of also being gay compared to fraternal twins. This suggests a genetic link.

2. Hormonal Factors: Another theory suggests that hormonal influences while in the womb may determine sexual orientation. The theory proposes that hormonal exposure influences the development of the brain's structure, which in turn influences sexual orientation.

3. Environmental Factors: Some believe that environmental factors, such as childhood experiences or upbringing, may contribute to homosexuality. However, there is little scientific evidence to support this theory.

4. Biological Factors: Some studies have found differences in the structure of certain brain regions between gay and straight individuals, suggesting that biological factors may play a role.

Remember, these are theories and the exact cause is still unknown. It's also important to note that sexual orientation, including homosexuality, does not need a 'cause' or 'explanation' any more than heterosexuality does. It's a natural aspect of human diversity.