how did granville woods improve the telegraph? he made it possible for the telegraph to transmit speech. he made it easier for ordinary, untrained people to operate the telegraph. he made it possible for moving trains to have telegraphs. he made the telegraph easier to carry around.

Granville Woods improved the telegraph by inventing the "Synchronous Multiplex Railway Telegraph" in 1887, which allowed messages to be sent to and from moving trains and train stations. This invention used static electricity from existing telegraph lines running parallel to the tracks, enabling communication between moving trains and stations, which was not possible before. This greatly enhanced railway safety by allowing train conductors and engineers to avoid collisions and report hazards on the tracks ahead

. Additionally, Woods' system allowed for the transmission of both Morse code and voice messages over the same telegraph lines, a feature known as "telegraphony," which made communication faster and more versatile

. His invention made it possible for moving trains to have telegraphs, improving coordination and safety in railway operations. Therefore, the correct improvement made by Granville Woods is that he made it possible for moving trains to have telegraphs.