You are presented with the question "What does igneous intrusion create?" and the following answer choices: 
- adding heat
 - loose soil
 - heat energy
 - Valuable products
 - hydrogen and oxygen
 - earthquakes
 - graptolites
 - objects that have mass

Now knowing that vein deposits of gold and silver are formed by igneous intrusion and gold and silver are valuable products, choose the best answer.


 

    Valuable products     