What empirical evidence could most effectively and directly be used to convince law makers to remove a dam that is blocking a river used by wild salmon to reach their breeding grounds?
A.) Information about the number of salmon offspring are produced over several years.
B.) Information on the distance from the ocean to the rivers that the salmon use.
C.) Information on how often the salmon mate during their breeding season.
D.) Information on how long it takes the juvenile salmon to grow into adults.
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