An operating system

is the chief hardware unit in a computer.
is loaded into the computer each time it needs to carry out an operation.
ensures that programs will not run on the computer at the same time.
allocates resources like memory to programs that are running.
all of the above.

You receive an email from an impressive-sounding stranger, professor alexander rothschild renard iii, president of the american institute for scientific political statesmen. he urges you to vote for his presidential candidate choice. this social media red flag is known as

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.

Joe needs to see the slide transitions and animations he has applied to his slides in a large view. which presentation view should he use? in which tab would joe find the animations option to make further changes, if any?