"or" or "and"?

[cheshire]

In a capitalist economy, people are free to buy and/or sell just about anything.​

Which preposition conjunction is better, "or" or "and"?

 

[Thomas1]

In a capitalist economy, people are free to buy and/or sell just about anything.​

Which preposition is better, "or" or "and"?

They aren't prepositions they are conjunctions.

I think it depends on what you want to emphasize.

If you use and it will mean that people can do both things (they can buy as well as sell).
If you use or it implies that they can do one of these things (either buy or sell).

Tom

 

[Siberia]

If you mean both you can leave 'and/or' as it is.