B r a m b l e h e a r t.................
        
             
        
        
        
Maybe because no one wants to listen to him or no one thinks he is important?
        
             
        
        
        
Answer:
American agriculture depends on the honeybee for survival.
The CCD epidemic is most likely caused by multiple factors.
Explanation:
A central idea (also called the main or key idea) is the main point the author of a text is making. Pieces of information that explain, expand, describe, illustrate, or clarify it are called supporting details.
The given text tells about a phenomenon called CCD and its impact on American agriculture. Its two central ideas are:
- American agriculture depends on the honeybee for survival.
- The CCD epidemic is most likely caused by multiple factors.
 The remaining two options represent supporting details.
 
        
             
        
        
        
I believe "vehement" is the correct answer. It means that it shows strong, powerful, passionate speech and tone.