It's a metaphor. 
To help you understand why, here's the definitions of both:
Simile: it's a <span>figure of speech involving the comparison of one thing with another thing of a different kind, it's used to make writing seem more vivid.
Metaphor: this is also a</span><span> figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.
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Answer:
B. the upper layer of the brain
Explanation:
the question was “what is the technical meaning of the word neocortex?” in the beginning of the paragraph it says “deep learning software is inspired by the structure of the brains neocortex, the grooved upper layer of the brain..”. 
 
        
             
        
        
        
Explanation:
I am fine and uh? are you fine too?
 
        
                    
             
        
        
        
1.loc
2.sign
3.nat
4.cogn
5.ped 
I'm not sure about the bonus questions
        
                    
             
        
        
        
Answer:
Shakespeare includes speeches by both Romeo and Juliet in Act II, Scene ii to develop a romantic dialogue between the young lovers.
Explanation: