Which of the following is NOT crucial information to send with the injured diver to EMS?

The correct choice recognizes that providing accurate and essential information about an injured diver is critical for the effective treatment and rescue process. Among the options listed, best guesses about any aspect of the diver's condition or status do not provide reliable information. Medical professionals rely on clear, factual data to make informed decisions, so guesses—regardless of their intention—are not beneficial and could even lead to confusion or misdiagnosis.

In contrast, sharing the diver's name and contact ensures the EMS team can identify and communicate effectively with the diver’s family. Understanding significant medical history is vital as it can influence treatment decisions, particularly in emergencies where conditions such as allergies or previous health issues are concerned. Providing local diver emergency system numbers and contact names enhances the efficiency of the response and ensures that all relevant local resources can be activated swiftly.

Consequently, omitting uncertain information, such as guesses, allows for the transmission of only crucial, actionable data that can aid the diver’s recovery and ensure prompt, appropriate care.