Answer:the answer is b
Explanation:I took the test and got it right
 
        
             
        
        
        
(2) They tend to lose electrons easily when bonding is the correct answer.
All metals have either one, two, or three valence electrons. Therefore, they tend to lose these valence electrons in order to have eight valence electrons like noble gases do.
Hope this helps~
        
             
        
        
        
A requires oxygen 
The reason is that fermentation does not always need oxygen.