The word “standard” in paragraph 2 is closest in meaning to __________.
Correct answer: A
Keywords: early violins, different from modern violins.
Clue: “In its early history, the violin had a dull and rather quiet tone resulting from the fact that the strings were thick”: In its early history, the violin had a dull tone and was rather quiet, due to the fact that the strings were very thin.
This is the difference between the original violin and the modern violin. Early violins produced softer and more mellow tones. The correct answer should be A. produces softer tones.