How are objects passed to functions as arguments? Give an example of what it ooks like when we pass an object as an argument? Give an example of what the subroutine header will look like when we pass an object into a subroutine as an argument? How is this way of writing and passing objects into subroutines similar to writing and passing variable arguments into subroutines? What would happen if we only wanted to pass a particular attribute of a class into a subroutine as an argument? What would the code look like when we call this particular subroutine and when we write the header for the subroutine in this case?