If a person uses good judgement, sexually transmitted can be prevented and treated

Well it depends on what you mean good judgement someone could have good judgement and still not prevent diseases having good judgement during sex can help but you but your partner might have a disease and you not know it which is why we can't completely be safe.

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport