From the information provided, it is clear that "Overfishing alters the food chain" (Option C) See explanation below.
When too many fish are removed from the ocean, an imbalance is created that can damage the food chain and lead to the extinction of other essential marine life, particularly sensitive species such as sea turtles and corals.
A reduction in the number of people in one link of a food chain can have an impact on prey-predator relationships across the ecosystem.
To prevent overfishing, the government in alliance with Marine ecosystem monitoring agencies establish fishing quotas to fishermen. Although it is not a perfect system, this helps to reduce the amount of overfishing.
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