D HOPE IT HELPS idk don't worry
        
                    
             
        
        
        
<span>Nations depend on other countries to buy their surplus goods so that they in turn can buy the products and raw materials they need.</span>
        
                    
             
        
        
        
Answer:
Immigrants ramp up the competition for jobs, creating a surplus in labor for some sectors. Also promoting innovation.
Explanation:
 
        
             
        
        
        
Answer: d) The "space race" was a Cold War competition by scientist.
Explanation: D is the best option because it puts "space race" as the subject of the sentence. 
The subject is the main focus of the sentence. 
Option A does this as well, but the sentence is very wordy and does not do enough to draw attention to "the space race". 
Option B keeps the scientists as the subject of the sentence. 
Option C makes the "space race" part of a prepositional phrase which can be eliminated.
Hence, Option D is the correct answer.