The failure of his invention lead him into seclusion and he ended up starving himself to death.

The failure of his invention lead him into seclusion and he ended up starving himself to death.

The failure of his invention lead him into seclusion and he ended up starving himself to death.









a. Lee De Forest
b. Nathan B. Stubbefield
c. Guglielmo Marconi
d. Samuel Morse













Answer: B