Fact 1: High temperatures can cause an object to combust.

Fact 2: And combustion equals power.

Given the two facts above, answer the question "What can cause a  more powerful reaction?" with the following options: 
- heating liquids
 - hyperthyroidism
 - Thyroid-stimulating hormone
 - hypothyroidism
 - chemical reaction
 - higher temperature
 - energy of moving objects
 - heat energy


 

      higher temperature   