Q: Fact 1: An earthquake causes the ground to shake. Fact 2: Examples include damage to man-made structures, ground failure and felt shaking. Given the two facts above, what causes damage to man-made structures?

OPTIONS:
(a). flooding.
(b). air quality.
(c). animal crossings.
(d). earthquakes.
(e). toxins.
(f). trees bending.
(g). influenza.
(h). Pesticides.
A:
(d).