It is a strong thing to persevere.
        
                    
             
        
        
        
The answer would be the message that is discussed through out the text because it is the big idea or the main purpose of the text.
B) the message that is discussed through out the text
        
             
        
        
        
Two things to keep in mind when you're deciding whether to use formal or informal English are the B) occasion and the audience.
Of course you are going to change the way you talk depending on whether you are speaking to your friends or to your teacher - usually with the teacher you are going to use more formal English.
Occasion is also important - you won't speak in the same manner at a party and a cocktail. 
        
                    
             
        
        
        
Answer:
Option 4 and 3
Explanation:
As he looks to the future, Dr. King gains momentum in his speech with an abundance of emotion in his words and a strong tone in his voice.
The forceful use of the repetitive phrase “go back”, made an impact on his command for the audience to go back to their hometown knowing the situation of discrimination will be changed.