Question

at least how many people should be trained in cpr on the service truck? 2 4 3 1

Explanation:

In safety and medical guidelines for service trucks (related to workplace safety and medical response), the standard is that at least 2 people should be trained in CPR to ensure there is coverage in case of an emergency (e.g., one to perform CPR, another to assist, call for help, or handle other tasks).

Answer:

2 (the option with the number 2)