D. a science article about how talking directly on cell phones changes brain waves
 
        
             
        
        
        
Answer:
A. Our school needs to offer several selections for food at lunch.
 
        
                    
             
        
        
        
Answer: Objective 
Explanation: Objective tone is impartial, it does not show any feelings for or against a topic. For example a researcher is expected to conduct a Research and report the findings as it is found irrespective of the individual personal belief. 
Objectivity is the report of a real fact that is not influenced by personal opinion or feelings. It is regarded as an impartial report that is free from personal feeling.
 Another example is a teacher should report a child academic performance without being partial.
 
        
             
        
        
        
Answer:
 B. basic
Explanation:
In this context, "primitive" means the campsite is relatively undeveloped, with little or no artifacts associated with "civilized" living: heat, light, power, plumbing, pavement, trash removal service, and so on.