Fact 1: Insulated material can be used for keeping warm.

Fact 2: To avoid hypothermia, stay warm and dry.

Given the two facts above, answer the question "What can help prevent hypothermia?" with the following options: 
- ventilated shirts
 - hydration
 - lowering body temperature
 - insulated material
 - Thyroid-stimulating hormone
 - Dehydration
 - air conditioning
 - electricity


 

    insulated material     