There is very large debate going on about whether or not astrology should be considered a science.  It should not be confused with astronomy: astronomy is the scientific study of the cosmos, but astrology is more philosophical.
Although there is great debate and no absolute answer has come out, for your purposes, the answer would be False.  Most people believe that astrology is NOT considered a science because they find the evidence behind it invalid.
        
             
        
        
        
it is weak because they don't add more details on the subject so people are just gonna ignore it
 
        
                    
             
        
        
        
Answer:
shock and denial 
pain and guilt 
anger
depression 
the upward turn 
reconstruction and working through (getting over it) 
acceptance and hope.
 
        
             
        
        
        
If you want to inform your customers about a new service but also about policy changes or price changes and similar things, you use memos. This is the best option from these four. Because memo is a brief, straight to the point and informal way of communication that is usually used with the customers.