In the major cities of industrialized countries at the end of nineteenth century, important public places such as theaters, restaurants, shops, and banks had installed electric lighting, but electricity was in less than one percent of homes, where lighting was still
provided mainly by candles or gas.
b. electricity was in less than one percent of homes and lighting still
c. there were less than one percent of homes with electricity, where lighting was still being
d. there was less that one percent of homes that had electricity, having lighting that was still
e. less than one percent of home had electricity, where lighting had still been