GENERAL KNOWLEDGE

Detailed explanation-1: -It was through his work with the deaf and his careful study of how sound is transmitted via the human voice that led Bell to the invention of the telephone. Fascinated by Samuel Morse’s telegraph, Bell set out to use what he knew about sound and speech to improve upon the idea of transmitting communication.

Detailed explanation-2: -In 1876, at the age of 29, Alexander Graham Bell invented the telephone. In 1877, he formed the Bell Telephone Company, and in the same year married Mabel Hubbard and embarked on a yearlong honeymoon in Europe.