Question: Place the access modifiers public, private,
internal and protected in order according to their strictness.
- strictest: only visible in the declaring class.
- Visible in the declaring class and in all its subclasses, even if
these classes belong to different namespaces. Not visible in non-subclasses
in the same namespace or in other namespaces.
- Like public, but the visibility is restricted to namespaces
that belong to the same assembly.
- most general: visible everywhere in the declaring namespace as well as
in other namespaces that import the declaring namespace.