Why Would People Build Their Houses in Areas Where Catastrophic

Why would people build their houses in areas where catastrophic mass movements occur?

A) Advanced technologies are able to take accurate measurements to predict when catastrophes might occur, so people can flee in time.
B) Catastrophes are rare, and people forget or do not suspect that they will occur.
C) Modern cities build retaining walls and other structures to prevent catastrophic damage.
D) Modern homes and buildings can withstand the destructive forces of mass movements.