From 1967 to 1986, every national commission that studied crime and police in America maintained that a would help the police do their job better.

College degree

Explanation: It was a common notion or believe among all national commission that studied Crime and police in America between 1967 to 1986 that police officers with college degree will do a better job than those without college degree. With the belief that college level officers will show a greater level of creativity, problem solving skill and also exhibit a higher degree of professionalism by avoiding the use of force to gain compliance.

answer; protectionism fosters competition and keeps price regulated;