b) Alexander Graham Bell

Alexander Graham Bell, credited with inventing the first practical photophone in 1880, made significant contributions to communication technology. The photophone was a pioneering invention that transmitted sound on a beam of light, a concept that predates and foreshadows the development of fiber-optic communications technology. Bell’s work with the photophone demonstrated the potential of light as a medium for transmitting information, laying the groundwork for future innovations in telecommunications. Although the photophone was not immediately practical due to the limitations of the era’s technology, it showcased Bell’s forward-thinking approach and his commitment to improving and expanding the possibilities of communication, influencing the direction of future technological advancements in the field.