Nathan is creating a presentation for the employees at his office. Which media element should he use in the navigational buttons and menus in his presentation? Nathan should use text or (blank) elements for the navigational buttons and menus in his presentation.

4. what is the reason for including the following code snippet in the header file animal.h? #ifndef animal_h #define animal_h class animal { public: animal(); animal(double new_area_hunt); void birth(); void hunt(double new_area_hunt); void death(); double get_area_hunt() const; private: double area_hunt; }; #endif