Sex is considered as a personal issue and many people considered taboo and find it difficult to discuss the sexual attitudes and behaviors.
The basis of any sexual finding is the human sexual cycle. It consists of four phases of sexual response
• Desire
• Arousal
• Orgasm
• Resolution
The practice of sex is done usually with the opposite sex called the heterosexual but in some cases homosexual practice is also done and is considered a mental disorder in previous years.
Hence the option a is not correct.
In a study it is reported that 2to 5% of men and 1 to 2% of the women are same-sex attracted.
Hence the option b is not correct.
Men are more likely to attract to the sex same but women are more attractive to both the sexes. This sex difference may reflect more erotic plasticity among women than men.
Hence the option d is not correct.
Thus most of the sexual orientation development reflects that it is a biologically based.
Hence the correct option is.