I believe the answer is idiom, the phrase is not comparing anything so simile and metaphor is out of the question, also personification is giving a non living thing human characteristics.
        
                    
             
        
        
        
Answer: B: earths magnetic field protects it from all types of space weather
Explanation: There is no text provided but this is the one that seems like it would be a good summary compared to the other answers. 
B would be your best option because it explains the text more.
 
        
             
        
        
        
I think it’s the first one. One impacts how well you do on the other.
        
             
        
        
        
Answer:
The sting that followed upon the striking of his fingers against his leg ceased so quickly that he was startled
Explanation:
The sentence in the excerpt that demonstrates a blunt portrayal of natural life is The sting that followed upon the striking of his fingers against his leg ceased so quickly that he was startled.
This shows that nature is indifferent to the suffering of humans. Nature tries to numb the man's fingers while he was about having a meal and despite the man's best efforts at gaining sensation to his fingers by striking his finger on his legs, it was useless because nature was unrelenting and indifferent to his suffering.