I'm pretty sure the answer is c
Genetics, abuse, and other factors contribute to the development of obsessive-compulsive, narcissistic or other personality disorders. In the past, some believed that people with personality disorders were just lazy or even evil.
std's are caused by an infection called trichomoniasis which is caused by parasites which then causes std's
Excretory = Urinary: Kidneys, Ureters, Bladder, Urethra