Which of the following is a requirement for administering a chemical test after arrest?

The correct answer is that there is a two-hour time limitation for administering a chemical test after a DWI arrest. In New York, the law stipulates that a chemical test, such as a breath, blood, or urine test, must be conducted within two hours of the arrest to ensure accurate measurement of a person's blood alcohol content (BAC). This timeframe is crucial because alcohol levels can change significantly over time as the body metabolizes it, and testing beyond this period may not accurately reflect the individual’s level of impairment at the time of driving.

The immediate testing option is not a requirement, as there are situations where testing may be delayed due to various factors. Testing at a hospital is not mandated, as chemical testing can be performed in different locations designated for such purposes. Similarly, the presence of witnesses is not a legal requirement for administering the test, focusing the emphasis instead on the procedural integrity and the timeframe established by law.