Which characteristic is true about Blood Alcohol Concentration (BAC) levels?

Blood Alcohol Concentration (BAC) levels typically follow a pattern where they increase after consuming alcohol, reach a peak, and then decrease over time as the body metabolizes the alcohol. This peak BAC may vary based on several factors such as the amount of alcohol consumed, the time frame of consumption, and individual differences in metabolism.

After the peak, BAC levels decline, often at an average rate of about 0.015% per hour, although this can vary. The body processes the alcohol primarily through the liver, and as it does, the effects of intoxication diminish.

The options that suggest consistent increases or constant BAC levels do not accurately reflect the physiological processes involved in alcohol consumption. BAC levels are dynamic and fluctuate in response to both alcohol intake and the body's metabolic response. Therefore, the characteristic of BAC peaking and then decreasing over time captures the typical progression of alcohol consumption and its effects on the body.