Definately B as this sort of behaviour shouldnt be tolerated under any circumstances. It brings down and degrades nudism to a perversion and as someone before me has said, this sort of stuff gets beaches closed down. They already did so in The Netherlands for the very same reasons. The fact that they feel compelled to engage in said behaviour only because they happen to be nude, shows their very doubtful dedication towards nudism in general and a blatant disrespect to other naturists as well.
The same thing continues to happen in the US as well Split Rock in NY is the latest victim of the folks who doesnt care if they ruin it for naturists as long as they get the jollies off in public
I would say B, I find it can give naturism a bad name and would make me feel dead uncomfortable as well
It absolutely gives genuine naturism an bad name and would make many non naturists uncomfortable as well but as you can see from others responses that doesnt matter to some people.
I was the first to propose C, and I have to confess that I am guilty of the offense myself. However, it was well after midnight, and a very long way from any others gathered at that beach, at least a quarter mile. Our fire attracted a visitor, but we could hear him coming and my wife just wrapped herself in the blanket and I sat naked on a log in a position that he would not be able to tell that I was nude. We spent the entire night on that beach and did not get dressed until the sun came up. So, I guess there is room for all three answers if the circumstances are right.
My initial inclination would be to ignore and move on but as a few have pointed out this type of behavior can and does lead to clothing optional beaches being shut down. My beach is Gunnison on Sandy Hook in New Jersey and The National Park Service would not tolerate behavior of this sort. Higbee Beach on the southern tip of Cape May further south of Gunnison used to allow nude sunbathing but no longer does at least in part because of overt sexual activity. My vote would have to be option B because I want to keep Gunnison as is for as long as possible. Which also means no glass containers and take your trash out with you!
Honestly, all depends on level of privacy they expect/wish.
If it is at present empty, but a place where logically and often patrons of the nude beach roam around, even if not part of the beach, it is not really I thing I would endorse, even if I would not report it either - and myself, I enjoy sex in the outdoors a lot.
It is a very thin red line, when a place is private and when it is just empty of people for the moment, and the chance of being spotted by people who would not fancy the sight is high. I accept people do get their kicks of the possibility of "getting caught", but they should avoid nude beaches and immediate environment for such activities, alone for the reason that it bring a bad name on the activity and again would attract more jerk-offs, exhibitionists, voyeurs rather than TrueNudists.