Final answer:
The correct answer is option b) 1844.
Step-by-step explanation:
The first public demonstration of Samuel Morse's telegraph was a significant event in the history of telecommunications. This remarkable invention enabled messages to be sent over great distances much faster than any other means at the time, including those carried by horseback. This revolutionary capability is attributed to the historical demonstration that took place in 1844, when Samuel Morse sent the first telegraph message on a new link between Washington, DC, and Baltimore.
Morse Code, using electric pulses over a wire in a series of 'long' and 'short' signals, was the backbone of this new method of communication and played a pivotal role in the faster spread of information, which greatly impacted business, economics, and politics.