74. The method used by Wadati to determine the depths of earthquakes is most like which
of the following?
(A) Determining the depth of a well by dropping stones into the well and timing how
long they take to reach the bottom
(B) Determining the height of a mountain by measuring the shadow it casts at different
times of the day
(C) Determining the distance from a thunderstorm by timing the interval between the
flash of a lightning bolt and the thunder it produces
(D) Determining the distance between two points by counting the number of paces it
takes to cover the distance and measuring a single pace