Final answer:
The most appropriate action in this situation would be to remove any excess clothing immediately to help the body cool down. Providing cool fluids to drink can also help lower the body temperature.
Step-by-step explanation:
The most appropriate action in this situation would be to remove any excess clothing immediately. This is because excess clothing can trap heat and prevent the body from effectively cooling down. Additionally, if the person is experiencing heat stroke, providing cool fluids to drink immediately can help lower their body temperature. Sweat is a sign that the body is trying to cool down, so it is important to ensure that the person stays hydrated.