Answer:
c
Explanation:
there cant be punctuation before and
 
        
             
        
        
        
A quatrain is a verse with four lines, or even a full poem containing four lines, having an independent and separate theme. Often one line consists of alternating rhyme,
existing in a variety of forms. We can trace back quatrains in poetic
traditions of various ancient civilizations, such as China, Ancient
Rome, and Ancient Greece; and they continue to appear in the
twenty-first century.
        
                    
             
        
        
        
Yes it’s good, though it’d be better if you used “Your sister and my sister are best friends, they do many things together” that (and) word doesn’t seem necessary. Hope this helped :)
        
             
        
        
        
Tell me about the remote study, what its advantages, and the bad things