Answer:
-- While mainly a readability feature, we can technically use Enum to do things like spoof a Boolean type in C allowing us some level of functionality.
-- Enums are great for representing states and other common constants like colors.
-- Enums let us specifically value each constant we create.
Explanation:
Enums is a part of a programming language which helps a developer or a programmer to defined a set of the named constants. Using the enums will help in making it easier to document the intent and also to create set of distinct cases.
Option 1 is applicable as in the Boolean there are only TRUE and FALSE values. By using enum one can add more state like that of being difficult or normal or easy.
Option 4 is applicable because enums are used to represent various states and also other constants.
Option 5 is also applicable they allow the developer to create each value constant.