Final answer:
Bell's extensive understanding of acoustics allowed him to explore ideas like transmitting multiple messages simultaneously, laying the groundwork for communication technologies like multiplexing. Hence, option (b) is correct.
Step-by-step explanation:
Bell's extensive knowledge of the nature of sound enabled him to conjecture the possibility of transmitting multiple messages over the same wire simultaneously. Alexander Graham Bell's research and understanding greatly contributed to the development of the telephone, and his insights into acoustic science allowed for the advancement of communication technology. His expertise led to conceptualizing the method of simultaneously sending different messages, a principle later known as multiplexing.
Bell's work not only revolutionized voice communication but also set the stage for the evolution of modern telecommunication systems, including the transmission of data, images, and video over various channels. His pioneering ideas continue to influence the field of telecommunications, highlighting the enduring impact of his innovative thinking.