Maintains consistency among data flow diagrams (dfds) by ensuring that input and output data flows align properly. a. balancing b. indexing c. shipping d. adapting

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