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Correct order is

1. Palaeozoic → Archaeozoic → Cenozoic
2. Archaeozoic → Palaeozoic → Proterozoic
3. Palaeozoic → Mesozoic → Cenozoic
4. Mesozoic → Archaeozoic → Proterozoic

Correct answer: Palaeozoic → Mesozoic → Cenozoic

Solution

The correct sequence of the three major eras is Palaeozoic, then Mesozoic, then Cenozoic. This matches the standard geologic time scale from older to more recent life forms and events.

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