C# does not support:

Understand the Problem

The question is asking about the features or concepts that C# does not support, specifically among options related to abstraction, polymorphism, multiple inheritance, and inheritance. This involves understanding the programming language's capabilities.

More Information

C# does not support multiple inheritance because it can lead to the 'diamond problem,' causing ambiguity and complexity.

Tips

A common mistake is confusing multiple inheritance with single inheritance or interface inheritance, which C# supports.

Sources

• Why C# does not support multiple inheritances | by Kamlesh Singh - medium.com