Which of these instruments of the orchestra are played with a bow? A. Violin
B. Viola
C. Cello
D. All of the above

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Your answer would be

D) ALL OF THE ABOVE

Bowed string instruments are a subcategory of string instruments that are played by a bow rubbing the strings. The bow rubbing the string causes vibration which the instrument emits as sound.

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c would  be the answer.