You are presented with the question "igneous intrusion causes vein deposits of what?" and the following answer choices: 
- Sediment
 - diamonds
 - water
 - precious metals
 - oil
 - Calcium carbonate
 - graptolites
 - hydrogen and oxygen

Now knowing that vein deposits of gold and silver are formed by igneous intrusion and along with gold and silver, they are known as precious or noble metals, choose the best answer.


 

    precious metals     