The number of gamma rays burst equals the number of

Compared to alcohol, are often more likely to produce dizziness and confusion before significant loss of physical coordination.
d. benzodiazepines

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)

The move over law is for safety of yourself and the officer and the ones pulled over, as a driver pulling over the officer control the situation with the pulled over person.

if it is an ambulance or fire truck with their sirens on it means they are having to get to an emergency so for the others safety for the emergency to save lives, pulling over lets them get through.

i hope this : )