Using Figure 12.11 in your textbook, which option correctly identifies a time that polarity changed from normal to reverse and back?
A) normal to reverse: 3.04 million years ago, reverse to normal: 2.60 million years ago
B) normal to reverse: 2.60 million years ago, reverse to normal: 1.79 million years ago
C) normal to reverse: 3.33 million years ago, reverse to normal: 3.04 million years ago
D) normal to reverse: 1.79 million years ago, reverse to normal: 0.99 million years ago
Answer: C
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