1. Stomach, Breaks down food with acid located in the stomach 
2.Mouth, Chews and Grinds food down. Allows the breakdown of enzymes 
3.Kidneys, Take out any unhealthy/unneeded substances in the food. 
4. Large Intestine, The formation of feces.
        
             
        
        
        
The correct answer is "trans fatty acids".
Trans fatty acids (colloquially as trans fats) are a type of unsaturated fatty acids wherein instead having its double bonds in the cis configuration giving the fatty acid "kinks" in the molecules making it more soluble; the double bonds in trans fats are in the trans configuration (hence the name) and this will not give the molecule kinks making it less soluble. Less soluble trans fats are notorious in depositing in peripheral arteries as well as in coronary arteries that increase the risk for developing atherosclerosis. 
        
             
        
        
        
Volcanoes, the lava when cooled becomes igneous rock!