A national park imposed a strict no-fishing rule to protect fish populations. After five years, the fish population was lower than before the ban. Which of the following most helps explain this paradox?
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A
Tourists stopped visiting the park once fishing was prohibited, reducing revenue for conservation programs.
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B
With fishing prohibited, no one removed invasive predatory species that had previously been caught as bycatch, allowing them to flourish and decimate native fish.
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C
Fish naturally migrate out of protected areas into adjacent unprotected waters over time.
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D
Park rangers lacked authority to enforce the fishing ban, so illegal fishing continued unchecked.