Answer:
A: A new blood test makes it easier-and safer-to detect concussions. 
Explanation:
The main idea of the passage is A new blood test makes it easier—and safer—to detect concussions.
Notice the phrases question the use of and proposed an alternative way. They suggest that the main idea involves a possible solution to a problem. Here, the main idea is that the problem of detecting concussions without radiation could be solved by a simple blood test.
 
        
             
        
        
        
The most subtle action is being wired
 
        
             
        
        
        
Answer:
well, when a person is American, speaks in English American and is fully acquainted with American cultures and rituals.
 
        
                    
             
        
        
        
I believe the radio broadcast strikes more fear for me. You can hear the tones of people's voices, and you can hear the people screaming. Although it is not as descriptive as the text I find it very scary!
Are you in Mosaic?