Which factors impair movement and complicate the rescue process?

Entanglement and entrapment are significant factors that can severely impair movement and complicate rescue efforts in underwater scenarios. When a diver becomes entangled in underwater vegetation, fishing lines, or other debris, their ability to swim and maneuver is dramatically reduced. This can lead to panic, increased air consumption, or disorientation, making the situation more perilous.

Entrapment, on the other hand, occurs when a diver gets stuck in a confined space, which is equally alarming and can lead to life-threatening situations. In these instances, rescuers must exercise extreme caution and may need to devise specialized techniques to safely extract the trapped diver without causing further harm.

While other factors like low visibility, high currents, equipment failure, and inexperienced divers can affect dive conditions and complicate rescues, entanglement and entrapment directly impact a diver's mobility in critical ways, making them particularly crucial issues in rescue scenarios.