True or False: The alcohol concentration at the time of driving can easily be calculated from a later test with little information.

The assertion that alcohol concentration at the time of driving can be accurately calculated from a later test with little information is false. This calculation involves several variables and assumptions that can complicate the process. Factors such as the individual’s metabolism, the time elapsed between driving and testing, and the amount of alcohol consumed can greatly influence blood alcohol concentration (BAC) levels over time.

To determine BAC at the time of driving, it typically requires a detailed understanding of the individual's drinking patterns, physical characteristics, and the timing of consumption in relation to the test. Without comprehensive data, any estimation may be unreliable and misleading, making it inaccurate to claim that such calculations can be made easily or with little information. Thus, the correct answer underscores the complexities involved in assessing BAC rather than simplifying it into a straightforward calculation.