Roland carries out various responsibilities as a part of the US police force. He is in charge of patrolling and important investigations. He also develops departmental policies and promotes other officers in the police department. Which police rank does Roland hold? A.
deputy commissioner
B.
police chief
C.
inspector
D.
sergeant

B. Would be correct

Answer///an appropriate hitch and safety chains should be used;

Psychologists often talk of the magical number "7" - so it is generally assumed that we can keep 7 (more or less, so 5-9 is the correct answer) items in our short term memory - we know this as a result of many experiments.

we can increase this by chunking, so for example "7 8 9 5 3" is harder to remember than "78 95 3" - try it yourself!

the answer is a)