A top level class may have only the following accessmodifier.

? Package

? Private

? Protected

? Public

Answer: Public

Explanation:

A top level class can have a public, as top level cannot be private and protected because the modifier private is not allowed. As, top level is a class which is not a nested class. Interface of a access modifier is either public or no modifier. There are two types of access control modifier are top level - public and member level - private, protected.