Answer:
b. Code an include preprocessor directives for the members
Explanation:
Namespace in programming can be defined as the declarative region which provides scope for the identifiers such as the functions, name of the types, variables, etc.
The namespaces are [tex]$\text{used to organize}$[/tex] the code into the logical groups and also used to prevent the name collision.
The ways that can be used outside the namespace [tex]$\text{can access the members}$[/tex] as :
-- the code used the fully qualifies name
-- by using the declaration to bring one of the identifier into the scope
-- by using the directive to bring all the things in the newspaper into the scope.
Thus the correct option is (b).