Fact 1: Thyroid hormones increase the rate of metabolism in cells throughout the body.

Fact 2: Metabolism is the process of converting food to energy.

Given the two facts above, answer the question "Thyroid hormones increase the rate of " with the following options: 
- by making heat
 - the rest of the body
 - female sex cells
 - Helps them grow
 - hydration of their cells
 - heat produced
 - converting food to energy
 - aerobic capacity


 

       converting food to energy  