How many sequential breath samples must be obtained when a breath test is administered?

Answer: B — Two

When a breath test is administered, obtaining two sequential breath samples is necessary to ensure the accuracy and reliability of the test results. This practice is important because it allows for a comparison between the two samples, helping to confirm that the readings are consistent. If the two samples show a significant discrepancy, it may indicate a problem with the test equipment or that the results are not valid. The protocol is designed to enhance the integrity of the testing process, which is crucial in legal and enforcement contexts, particularly in cases related to driving under the influence. In addition, having two samples helps to provide a more conclusive understanding of a person's blood alcohol concentration (BAC) at the time of the test. The law requires this procedure to protect individuals' rights and ensure fair outcomes during prosecution or legal proceedings.