Answer:
B. a tag
Step-by-step explanation:
In the structure definition given below:
struct Employee
{
string name;
int idNum;
};
Employee corresponds to the tag of the structure. The tag is used to create additional instances of the structure. For example:
struct Employee e1;
struct Employee e2;
name and idNum are members of the Employee structure and are referenced using the dot notation. e.g.,
struct Employee e1;
e1.idNum=1;