ISO standard selection

1. Government Ministries
2. Small, Medium and Large business places.

Answer: The selection of an ISO standards depends on many factors, such as:
- Laws and regulations that must be followed
- Business (private or governmental) that must be achieved
- Customers / Users needs to be fulfilled

So, without more detailed information it is not possible to recommend specific ISO standards.

But it is important to note that ISO standards are designed to be implemented by organizations of any sector or size.

See this article for more information:
- Is ISO 27001 among the top ISO standards? https://advisera.com/27001academy/blog/2013/09/09/is-iso-27001-among-the-top-iso-standards/