Passage Summary: Giant sea turtles in tanks catch deadly diseases they would never encounter in the ocean, but surprisingly, they live just as long on average as their wild cousins.

Reasoning: Leatherback turtles in captivity are exposed to unique fatal diseases not found in the wild, yet their likelihood of reaching maximum life expectancy remains roughly equal in both environments.

Analysis: We are faced with a classic survival paradox: if captivity introduces new, fatal risks, why isn't the survival rate lower? To resolve this, we need to find a 'balancing act.' If captivity adds a negative (new diseases), it must also remove a negative found in the wild, such as predators, starvation, or environmental hazards. Look for an answer that provides a benefit of captivity or a danger of the wild that offsets the disease risk.