D) it extended support to elderly citizens
THE ANSWER IS C mostly and if thats incorrect its probably the last one btw i like your username itss cool:)
C.
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Answer:
The beginning of the Precambrian period starts with the formation of Earth about 4.5 billion years ago and ends at the first sign of complex life about 540 million years ago. Though the Precambrian Period is often referred to as a period, it's actually the only supereon, which means that it spans multiple eons.
Explanation:
