The first one is the correct answer..no commas needed
        
             
        
        
        
Answer:
 compare and contrast.
Explanation:
The passage starts with a statement backed by popular opinion, "Most people think of sleep as a time when the mind and body can rest after a day of activity." After this it throws a curve ball giving a statement backed by fact, saying, "doctors know much more than that." The passage proceeds to explain what doctors know, which is comparing and contrasting, popular belief and fact.
This is pretty much the whole structure of this informational passage.  
 
        
             
        
        
        
Answer:
Answer:
The miller continues to treat his son very poorly
Step-by-step explanation:
The main problem is that the miller needs a job and worries about people's opinion of him.
So, the miller is worried as he does not have a job and because of that, his behavior to his son is continuously very poor.
Hence, there is a separate event that the miller continues to treat his son very poorly and this is caused by the main event i.e. the miller does not have a job and he needs a job and he cares about people's opinion of him. (Answer)
 
        
             
        
        
        
Answer:
PART A
D. Children work in unsafe environments for little or no money to pick cocoa beans
for chocolate.
PART B
B. “They sleep in dirty rooms, work 12-hour days without pay, are fed very little,
and are sometimes whipped.” (Paragraph 3)
Explanation:
From the article Child Labor in Cocoa Production, the slavery the children who are forced to work on cocoa farms are highlighted and the basic reason why they are easy targets are also discussed. 
The children work in an unsafe environment, are paid very little, forced to overwork and are sometimes whipped.