im pretty sure its B.
but i know its not A. or D. because those are nonrenewable 
but it is possible that it is C. 
 
        
                    
             
        
        
        
That means like oxygen for like breathing in your mouth
        
                    
             
        
        
        
Answer:
The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). ... It was formed by a transform boundary.
 
        
             
        
        
        
<h2>
The End of Trans-Saharan Trade Routes:</h2>
Explanation:
The factors that led to the end of trans-Saharan trade routes are:
- Civil unrest due to collapse of the Songhay Empire, the Timbuktu, by the Morracans in 1591
- The extreme desert conditions like extreme climates, excessive heat, lack of water and food etc made the travel logistics very tough. This made people opt for other transport systems
- Huge advancements made in maritime travel  
- Exploration of West African trade routes
- Economic, political and social changes which led to the end of trans-Saharan trade routes
 
        
        
        
Because, like shaking your head yes or no, it is understood by everyone, regardless of region or country.