Born March 1, 1810, Żelazowa Wola, near Warsaw, Duchy of Warsaw [now in Poland] [see Researcher’s Note: Chopin’s birth date]—died October 17, 1849, Paris, France), Polish French composer and pianist of the Romantic period, best known for his solo pieces for piano and his piano concerti. Although he wrote little but piano works, many of them brief, Chopin ranks as one of music’s greatest tone poets by reason of his superfine imagination and fastidious craftsmanship.
        
                    
             
        
        
        
The answer is D. the other answer choices are not as concrete as the last one
 
        
                    
             
        
        
        
Answer:Bar lines specifies the no of beats in a bar. If the number of beats between bar lines is 4 then 4 is the number of beats in a bar.
Explanation: