Why is it advised to put wet cloth strips on the forehead of a person suffering from high fever?

It is advised to put wet cloth strips on the forehead of a person suffering from high fever because cold water gets heat from the body, which reduces the temperature of the body.
When wet cloth strips are applied to a feverish person's forehead, the water in the cloth absorbs heat from the hot forehead and vaporises. It aids in lowering the additional body heat brought on by a high fever, hence assisting in lowering body temperature.

Hence, the correct statement is to help reduce body temperature through evaporative cooling.