An investigator is confronted with a life-threatening situation that necessitates using a test article in a human subject who is unable to provide informed consent and there is no time to obtain consent for the individual's legal representative. under the fda regulations, describes the best course of action for the investigator.

Where are the subjestions

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.