What is the most appropriate type of fabric to wear in high humidity with temperatures in the upper 90s?

Cotton is the most appropriate type of fabric to wear in high humidity and temperatures in the upper 90s because of its natural properties. It is a breathable fabric that allows air circulation, which helps keep the body cool. Cotton also absorbs moisture effectively, which can help wick sweat away from the skin, providing comfort in humid conditions. The softness of cotton against the skin adds to the overall comfort, making it a favored choice for hot and sticky weather.

In contrast, polyester, wool, and nylon are synthetic or heavier materials that can trap heat and moisture against the body. Polyester doesn't breathe as well as cotton, which can lead to discomfort in high humidity, while wool is generally better suited for cooler climates due to its insulation properties. Nylon, although lightweight, may not effectively wick moisture away in the same manner as cotton, making it less ideal for extreme heat and humidity.