Alpheus Babcock developed the one-piece cast iron frame for piano.
<h3>What is a piano?</h3>
Piano is a musical instrument, having black and white notations of different tones. A person who plays a piano is known as a pianist. The structure of pianos has evolved over time.
The most important evolution in the history of pianos was made in 1825 when Alpheus Babcock introduced a one-piece cast iron frame for pianos.
Hence, option D holds true regarding the crucial development in the history of piano.
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Answer:
B
Explanation:
Some one in the comment section said it was b because they previously took the test already. Also, next time could you provide a picture or video to go with your question?
Answer:
The Web Developer, most of the time they are the ones that build the website and do the coding for it.
