The correct answer is (d): January 18.
International Transgender Day of Visibility is observed every year on January 18 to recognize the achievements and contributions of transgender people around the world. It is also a day to raise awareness of the discrimination and violence that transgender people face.
The day was first observed in 2009 by Rachel Crandall, a transgender woman who was then the executive director of the Transgender Law Center. She chose January 18 because it is the birthday of her friend, Rita Hester, who was murdered in 1998. Hester was one of the first transgender people to be publicly recognized as a victim of hate violence.
International Transgender Day of Visibility is an opportunity to celebrate the diversity of transgender people and to show support for their rights. It is also a day to educate people about the challenges that transgender people face and to call for an end to discrimination and violence.
The other options are incorrect because they are not the dates on which International Transgender Day of Visibility is observed.