The correct option is D All of the above
Sexually transmitted diseases (STDs) are the diseases which are transmitted through sexual intercourse. For example: AIDS
Venereal diseases (VDs) are also transmitted through sexual intercourse. For example: Gonorrhoea
Reproductive tract infections (RTIs) are infections of the genital tract. They affect both women and men. This kind of infections are the results of sexually transmitted diseases (STDs) and venereal diseases (VDs). But they can occur from non sexual means also.
Therefore, option (d) is the correct answer.