Q:
      
      
         
            
Which must be true for metamorphism to occur?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) The parent rock must be in solid form         
         
Explanation: Metamorphism is the method of changing the structure of a rock by using heat and temperature.
Hence, for this to happen the parent rock must be in solid form only. Therefore, option C) is true.
       
      
      
      
          View Answer
          Report Error
          Discuss