Final answer:
When approaching a victim lying in the snow or a small puddle, you should prioritize assessing the surroundings and potential hazards, checking for breathing and responsiveness, and then determining the depth of the snow or puddle. Administering CPR should only be done if the victim is unconscious.
Step-by-step explanation:
When approaching a victim lying in the snow or a small puddle, the first priority should be to assess the surroundings and potential hazards (Option A). This is important to ensure the safety of both the victim and the rescuer. Checking for breathing and responsiveness (Option B) is the next step to determine if the victim needs immediate medical attention. The depth of the snow or puddle (Option C) is not a priority when it comes to prioritizing the approach to the victim. Administering CPR immediately if the victim is unconscious (Option D) should only be done after assessing the surroundings and checking for breathing and responsiveness.