My personal recommendations would be to 
A ) Make the subject shorter, like "Reason for Absence" or "My Absence"
B ) Make the email more formal. (You don't have to copy my recommendation word for word but if you want to or use it for reference that works):
"Good Morning/Afternoon/Evening Mrs. __,
I hole you're have a lovely morning/afternoon/evening. Today I was absent and I apologize for the inconvenience. The class meeting didn't appear on my canvas courses and I couldn't find a zoom link. If there's anywhere I can find either one for the future please let me know and again I'm sorry for the inconvenience.
Sincerely,
__"
        
                    
             
        
        
        
C)That their family line has not branched out
        
                    
             
        
        
        
The answer is d the last answer. hope this helped! :)
        
             
        
        
        
I think the answer is the reason for his absence is quite simple to understand.
        
                    
             
        
        
        
(B) The people of the town were amused by their new loony's unusual appearance and seemed to take delight in his performance on the minibus.
This is the best summary of the ideas of the passage, because transforming into the loony and the experiences that follow are all collected in this statement.