I think the answer should be medulla oblongata or foramen magnum.
The major nerves that leave brain should form a thick cord in the brain stem that called medulla oblongata. Medulla oblongata will pass a big hole in the base of the skull that called foramen magnum. Depends on what part the question asked(bone or tissue), it probably between those two options.
        
             
        
        
        
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy!
        
                    
             
        
        
        
Number 1 is C
And im not sure about the rest :(
        
                    
             
        
        
        
Answer:
C
Explanation:
In general, Gases are the most compressible and solids are the least compressible.