a: Instead, many deaths and injuries result from falling objects and the collapse of buildings, bridges and other structures.
b: Earthquakes almost never kill people directly.
c: Fire resulting from broken gas or power lines is another major danger during a quake.
d: Spills of hazardous chemicals are also a concern during an earthquake.
c a b d
d a c b
d c a b
d c a b
D.
d c a b