Almost all childless women at 34 are career women.
This is a good point and I would to provide more details on it. I'm going to go through women in some occupations.
Think about dental hygienists and paralegals. These two professions pay reasonably well, have reasonable hours, and are not excessively demanding. Women who work these jobs can live comfortably in a decent one bedroom apartment or get a roommate and live in a nicer, 2 bedroom place. They don't make enough to have a luxurious lifestyle, but they do make enough for a decent one. Neither occupation is an occupation with women with advanced level degrees. Both occupations have trade certifications and neither requires even a bachelor's degree. It's a common path for paralegals to have a bachelor's degree though. An associate level degree is more common than a bachelor's degree for dental hygienists.
Because neither dental hygienists nor paralegals are major career women, most are desirable.
I would say that the majority of 34 year old dental hygienists and paralegals have a child by 34. They are either married moms or single moms by 34.
Other medical assistants are a lot like dental hygienists and have a child by 34.
Most 34 year old elementary school teachers have a child by 34. Elementary school teachers are not career women with advanced degrees. They are typically women with elementary education bachelor's degrees.
Most 34 year old retail worker females or 34 year old bartenders have a child. Most 34 year old waitresses at restaurants like Denny's or Applebee's have less than a college degree and have a child.
Who are 34 year old childless women?
These are university professors, lawyers, doctors/dentists, psychologists, and higher level individual contributor/middle manager business women. All of these women have at least a bachelor's degree and many of them have advanced level degrees.
I think Option C is going to be what jives with most of the men here including myself.
We are discussing this in a vacuum of course where all other things are the same -- but let's be honest, that isn't realistic. This single 34 year old with no kids probably has loads of bad LTR experience, probably is also Cluster B, etc. She is going to be scarred and you are going to pay for it. Given that, I would be tempted to go option A and take a chance, but 18 is awfully young to have a relationship with. I at least need to be able to walk into a bar with an LTR.
You make a good point about the typical childless 34 year old woman, who might have one of the occupations I listed above. She definitely has had bad experiences in the sexual marketplace. She might even have a childless divorce to her name. If never married, she might have ridden the penis carousel, lived in a boyfriend and it didn't work, etc.
I'm not tempted to go with the 18 year old because she already has a child. The ability to walk into a bar with an LTR is a good thing. It's been a very long time since my last date with someone under age 21.