📊 GMAT Exam Prep

The average lifespan of a certain species of deep-sea fish has decreased by 20% over the last decade. During the same period, ocean temperatures in their habitat have risen by an average of 1 degree Celsius, and the population of their primary predator has increased by 15%. Which of the following can be most reasonably inferred from the information above?

A The increase in predator population is the sole cause of the fish's decreased lifespan.
B Rising ocean temperatures are detrimental to the deep-sea fish species.
C At least one factor contributing to the fish's decreased lifespan became more prevalent in the last decade.
D The deep-sea fish species is unable to adapt to environmental changes.

✓ Correct Answer: Option C

We know the lifespan decreased and multiple environmental factors changed. While we cannot pinpoint a single cause or assume inability to adapt, it's reasonable to infer that at least one of these changing factors played a role.

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