Multiple choice general knowledge science & technology In which decade was the telephone invented? 1850s 1860s 1870s 1880s Reveal answer Fill a bubble to check yourself C Correct answer Explanation Alexander Graham Bell patented the telephone in 1876, which places the invention in the 1870s. The 1850s and 1860s are too early for the telephone's development, while the 1880s came after the telephone was already patented and being commercialized.