D. Conclusion
After gathering data in support of a hypothesis, you can make a conclusion.
A hypothesis has to be tested multiple times by multiple researchers to become a theory. A fact has to be proven multiple times as well (but theory is a much better word).
        
             
        
        
        
Most seismic activity occurs at three types of plate boundaries—divergent, convergent, and transform. As the plates move past each other, they sometimes get caught and pressure builds up.
        
                    
             
        
        
        
Answer:
B, C, D
Explanation:
The following statements are true regarding the continental crust;
It is between 25 and 70 km thick
Its made of all types of rocks
It contains silicate minerals high in sodium, potassium, aluminum, and calcium