The extent to which an individual may be under the influence of alcohol is usually determined by what methods? Measuring the alcohol content In breath Emotional stability assessment Reciting the alphabet in a foreign language Measuring the quantity of alcohol in the blood

The extent to which an individual may be under the influence of alcohol is usually determined by measuring the alcohol content in breath or measuring the quantity of alcohol in the blood. These methods are commonly used by law enforcement officers to determine if a person is driving under the influence of alcohol. Emotional stability assessment and reciting the alphabet in a foreign language are not standard methods for determining alcohol influence.