Final answer:
The identifiers inside the braces in a line of code for an enumeration are known as enum constants, which are specific values of an enumerated type that can be assigned to a variable.
Step-by-step explanation:
In the context of programming, particularly in languages like C, C++, and Java, the identifiers vanilla, strawberry, and chocolate that appear inside the braces of an enumeration are referred to as enum constants. These are specific values that an enumerated type can hold. Enumerations provide a way to define a set of named integral constants that may be assigned to a variable. For example:
enum IceCreamFlavors { vanilla, strawberry, chocolate };
In this example, IceCreamFlavors is an enumeration type and vanilla, strawberry, and chocolate are the enum constants defined for this type. It's a good practice to name these constants in uppercase letters to distinguish them from variables, which helps improve code readability and maintainability.