GENERAL KNOWLEDGE

Detailed explanation-1: -Bell’s mother was deaf/hearing impaired and he would often speak to her by placing his mouth close to her forehead, believing the vibrations from his voice would help her distinguish speech more clearly than using an ear trumpet.

Detailed explanation-2: -By 1875, Bell, with the help of his partner Thomas Watson, had come up with a simple receiver that could turn electricity into sound. Other scientists, including Antonio Meucci and Elisha Gray, were working on similar technologies, and there’s some debate over who should be credited with the invention of the telephone.

Detailed explanation-3: -Education ran in Bell’s family. His father lectured on elocution and developed communication tools for deaf and hard of hearing students. Following in his father’s footsteps, Bell taught at schools for the deaf in London, Boston, and Hartford, Connecticut.