If you are caught outdoors during a thunderstorm and cannot find immediate shelter in a building or car, what is the safest posture to adopt in an open area?

✓ Correct Answer: Option C

Crouching low with feet together minimizes your contact with the ground and reduces your height, making you less of a target for lightning. It's crucial to avoid lying flat, as this increases your surface area in contact with the ground, and to stay away from tall objects.