An autotroph produces its own food while a hetertroph has to find it/hunt for it/gather it
Examples~ 
Autotroph-Sunflower
Heterotroph-Wolf
        
             
        
        
        
The answer is C. Please mark as brainliest
        
             
        
        
        
Answer: Andrew's scientific theory was that technology would someday be the world's main resource.
Hopefully this helped.