the possibility of Adams’s failure and having a lot of debt to repay!!! this is correct i just took the test i promise it is 
 
        
             
        
        
        
Answer:
√16.
Explanation:
It is rational because the square root of 16 can be solved and is  a whole number (4). The rest cannot be .
 
        
                    
             
        
        
        
Back in the day we used to milk cows by hand, nowadays we have machines to do it for us
        
             
        
        
        
Answer:
The narrator is remarking that trees make the night darker.
Explanation:
Allen Ginsberg was an American poet. He wrote the poem "A Supermarket in California" in 1956 that was first published in Howl. In the poem, the narrator visits a supermarket in California where he imagines himself following Walt Whitman who was shopping in the supermarket of California.
The meaning of this phrase ''The trees add shade to shade'' means the narrator is remarking that trees make the night darker.
 
        
                    
             
        
        
        
Answer:
The connection that President Obama draws between step three of his plan and improving the nation is that it is vital for American citizens to be responsible and vigilant for the development of the nation.
Explanation:
President Obama in his speech addresses the people of the nation and conveys to them that without their vigilance, making America great again would not be possible.
He states that if the citizens behave with more vigilance, the feat of an indestructible and unthreatenable nation can be easily achieved.