I want to ask a question about small-scale enterprises. What is the best site that can be asked on?
Here are some options for you, it will largely depend on what your question is actually about:
The Workplace - Stack Exchange is for members of the workforce navigating the professional setting.
Ask Patents - Stack Exchange is a collaboratively edited Q&A platform for patent experts, inventors and citizens who wish to participate in the US patent process. Its primary purpose is to help individuals:
Solicit help finding prior art that might apply to a patent or application Get answers to hard questions about specific patents Ask questions about the US patent system or process
The Startups site didn't have enough activity during the beta and has been closed.
Q&A about the site for entrepreneurs faced with delivering a new product or service under conditions of significant uncertainty
Without knowing the exact content of your question I would say that Startups is your best bet - see if there is a precedent for the question you want to ask or look on the per-site meta.
Occasionally a business related question may be on topic on Personal Money & Finance