What is an opportunity cost?

Another restaurant manager says to you, “i’ve heard that barcelona has a three-step hiring process. candidates first have an interview in which scott does most of the talking, and then they visit barcelona restaurants and record their impressions. this seems like a lot of work. what is a purpose of both these steps? ” what would you tell the manager?

In e. c. tolman's experiment, some rats were trained to run through mazes for standard food goals, while other rats were allowed to explore the mazes for 10 days without food goals or other rewards. later, when food rewards were placed in a box at the far end of the maze, the previously unrewarded rats reached the food box as quickly as the rewarded rats after only one or two trials. this experiment demonstrated that the rats had the ability to form of their surroundings.

Which act was a response to three high-profile assassinations? a. the mailing of firearms act b. the national firearms act c. the gun control act d. the brady handgun violence prevention act