The "rare Earth hypothesis" holds that Earth- like planets will prove to be quite rare. Which of the following statements best sums up the current status of the debate over this hypothesis?

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While there have been some discoveries of potentially habitable planets, we still do not have enough data to make a definitive statement about the frequency of Earth-like planets. Some argue that the conditions necessary for complex life to exist are so specific that they will only exist on a rare few planets, while others argue that the vastness of the universe makes it likely that there are many habitable planets out there.

The "Rare Earth Hypothesis" Holds That Earth- Like Planets Will