Final answer:
Releasing the brake just before impact with an unavoidable large animal is considered an emergency braking technique, intended to potentially reduce the severity of the crash.
Step-by-step explanation:
Letting up on the brake just before hitting a large animal that you can't avoid is an emergency braking technique. This method is sometimes recommended to lessen the impact when a collision is unavoidable. By releasing the brake just before impact, the front end of the vehicle rises slightly, which could potentially reduce the risk of the animal going through the windshield or causing additional harm. It's meant to modify the dynamics of the vehicle and animal during the crash to potentially result in a less severe impact. It is important to note, however, that this technique should only be used as a last resort when an accident is inevitable and that the best safety measure is to drive attentively to avoid collisions with animals altogether.