While we wait for the sun to rise is a sentence fragment.
There is no ending that completes the sentence.
To finish, an example would be:
<em>While we wait for the sun to rise, we eat breakfast.
</em><em>
</em>
        
                    
             
        
        
        
Answer:
It is a pronoun
Explanation:
A pronoun is taking the place of a noun. Since you could replace a noun with it, like instead of "the book didnt move" it would be "it didnt move". While this is much less specific, it still counts as a pronoun.
 
        
             
        
        
        
3. Maibon and Modrona argued
        
                    
             
        
        
        
With what? you have to include a question
 
        
             
        
        
        
A matrix arranges topics and ideas for easier "comparison". 
Matrix multiplication assumes imperative job in numerous logical controls as a result of fact that it is considered as the principle apparatus for some different calculations in various regions, similar to those in seismic examination, diverse simulations like galactic simulations, aerodynamic calculations, signal and pictures handling.