How can rescuers communicate effectively during a swiftwater rescue?

Effective communication during a swiftwater rescue is crucial for ensuring the safety of both rescuers and the individuals they are attempting to assist. The correct choice recognizes that employing a combination of hand signals, whistles, and radios creates a more versatile and reliable communication system.

Hand signals can be easily observed from a distance, especially in noisy environments where verbal communication is challenging. Whistles serve as a simple yet effective auditory cue that can cut through ambient noise, making them useful for getting attention quickly. Radios provide a means for clear communication over longer distances, especially in areas where shouting may not be effective due to water currents or other environmental factors.

Using only visual cues or relying solely on shouting limits the effectiveness of communication, as these methods may not reach team members or victims who are not in direct visual or auditory range. Additionally, text messaging poses its own challenges in a swiftwater rescue scenario, such as network reliability and delays in response. Therefore, option B encompasses a comprehensive communication strategy that enhances situational awareness and coordination during a rescue operation.