The central idea in the passage is :
A. The theremin is becoming a newly popular Instrument to play.
- The central idea in the passage is that the theremin is becoming a newly popular Instrument to play.
- The over explanation which is on the developing notoriety of the instrument is the central thought within the entry.
- Typically since, when the instrument was shaped by the Russian physicist, its popularity grew little within the 1920's some time recently it blurs absent.
Thus, the correct answer is A.
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