Tectonic plates are more common in California
        
                    
             
        
        
        
Well, using my limited knowledge, "cleaving" means to chop, break in half, split, etc. Twain means twice. So, perhaps it's like "you've broke my heart in half", something along those lines? hopefully this helps you.
        
             
        
        
        
Answer:
B. Start studying the day before the test