What best describes the purpose of the recycle bin (microsoft windows) and trash (apple mac) features? to make more room for new files or folders on a storage device to enable users to recover accidentally deleted files and folders to scramble file content to make files unreadable to clean out a folder so that it can be reused multiple times

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_cost should be removed since header files should not contain constants.c)the definition of book should be removed since header files should not contain class definitions.d)the body of the calculate_terms function should be added to the header file.

Which of these is not a type of socket? aga (alternating grid array) pga (pin grid array) spga (staggered pin grid array) lga (land grid array)

While using pert (program evaluation review technique) and cpm (critical path method) techniques, activities that are not on the critical path are more inflexible than those activities on the critical path. select one: true false