I think it is B because the reader knows what is happening but the character doesn’t.
        
                    
             
        
        
        
The subject tells whom or what the sentence is about, and the predicate tells what the subject is or does.
Example: The dog ran. 
Explanation: The dog is the subject of the sentence, because the sentence is telling something about that dog.
        
             
        
        
        
To help control the insects in Borneo
        
             
        
        
        
Imagined by the audience. 
In the play "Our Town," the actors mime using the various props, such as shucking the beans, sipping from milkshakes, and walking a horse. The audience does not see these props or items onstage so they must imagine them during the course of the play.