GENERAL KNOWLEDGE

Detailed explanation-1: -It was at this time, 1876–1877, that a new invention called the telephone emerged.

Detailed explanation-2: -On March 7, 1876, Alexander Graham Bell successfully received a patent for the telephone and secured the rights to the discovery. Days later, he made the first ever telephone call to his partner, Thomas Watson.

Detailed explanation-3: -On 7 March 1876, Bell was granted US patent 174465A, for a method of transmitting speech by telegraphy-the telephone.

Detailed explanation-4: -Answer. Alexander Graham Bell is credited with being the inventor of the telephone since his patent and demonstrations for an apparatus designed for “transmitting vocal or other sounds telegraphically… causing electrical undulations” were successful. First Bell Telephone, June 1875.