The consequence was to interrupt the normal, biological rhythms of life and to alter our schedules for work and leisure. Industrial plants could operate in shifts around-the-clock, for example, and the concept of "the city that never sleeps" became a reality.
—Smithsonian Museum of National History
This quotation is referring to what invention?
A.
the telephone
B.
the electric light
C.
the home television
D.
the telegraph