Why was building damage so extensive in the 1985 Mexico City quake? a) The epicenter was right in the city. b) Much of the city is built on filled-in, shallow lakes and swampland. c) The steel frame buildings were rigid and lacked the flexibility to withstand lateral swaying during even a moderate magnitude quake. d) The Richter magnitude was 8.8, and the focus was only 10 miles from the city.
