The oldest era is:
Correct answer: D. Paleozoic Era
- A. Hijri era
- B. English era
- C. Saka era
- D. Paleozoic Era
Explanation
The Paleozoic Era began about 541 million years ago, long before the Hijri, English, and Saka eras, which are human calendars or historical dating systems. Strictly speaking, Precambrian time is older than the Paleozoic, but it is not an option.
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