Question

who invented the telegraph
samuel morse
sir charles wheastone
sir william cooke
all 3 of these people

Explanation:

Samuel Morse is well - known for developing the Morse code and was a key figure in telegraphy. Sir Charles Wheatstone and Sir William Cooke also made significant contributions to the development of the telegraph. All three played important roles in the invention and evolution of the telegraph.

Answer:

D. All 3 of these people