Which of the following correctly describes the meaning o f‘namespace’ feature in C++? a. Namespaces refer to the memory space allocated for names used in a program b. Namespaces refer to space between the names in a program c. Namespaces refer to packing structure of classes in a program. d. Namespaces provide facilities for organizing the names in a program to avoid name clashes. Solution D)Namespaces provide facilities for organizing the names in a program to avoid name clashes. Whatever code we write in source program of c++ that is organized as different groups by namespaces. While writing our program we include different libraries in our source files.because of this libraries some name clashes occur that\'s why we are using namespaces in our source program. .