Answer:
A
Explanation:
This line is not talking about his morals, or interests in general. So, from the given answers C and D are off the list from the possible answer. Now, because it says " not unacquainted", it is leaning toward the fact that he had basic or any kind of knowledge beforehand. So, the right answer indeed is A.
 
        
             
        
        
        
Your answer is A merrily splashed
        
             
        
        
        
I would help but I cant tell which clause is underline! sorry
        
             
        
        
        
Answer:
the Gummy Bear dude, from the song "Oh I'm a gummy bear, oh yes I'm a gummy Bear"