The best answer to the question "Who invented the telegraph?" is C. Samuel Morse.
Here's why:
1. Samuel Morse is widely credited with inventing the telegraph in the early 19th century.
2. He developed a working telegraph system that used a series of electrical signals to transmit messages over long distances.
3. Morse's invention revolutionized communication by enabling rapid long-distance messaging, marking a significant technological advancement in that era.
So, in summary, Samuel Morse is the correct answer as the inventor of the telegraph.