Answer:
Standardized mortality ratio
Explanation:
In epidemiology, the standardized mortality ratio or SMR, is a quantity, expressed as either a ratio or percentage quantifying the increase or decrease in mortality of a study cohort with respect to the general population.
Driver licence or proof they are 21 or over 21
Either 50,70 or 50,75 because 80 and 85 are to high if you think I'm wrong you can always look it up in google
The one that does not occur during a typical labor would be: The umbilical cord breaks.
The umbilical cord (the placenta) wouldn't break even after the baby came out from the mother's body. It has to be manually cut out by the doctors after the labor is finished
