The big bang happened ___ years ago.

18 billion

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14 billion

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10 billion

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5 billion

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Solution

The correct option is B 14 billion
$∙$ About 14 billion years ago, a massive explosion took place that caused the formation of the universe.
$∙$ This explosion was massive of the strength of millions of nuclear bombs. This explosion is what we call the big bang.

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The big bang happened ___ years ago.

The correct option is B 14 billion∙ About 14 billion years ago, a massive explosion took place that caused the formation of the universe. ∙ This explosion was massive of the strength of millions of nuclear bombs. This explosion is what we call the big bang.

The correct option is B 14 billion
$∙$ About 14 billion years ago, a massive explosion took place that caused the formation of the universe.
$∙$ This explosion was massive of the strength of millions of nuclear bombs. This explosion is what we call the big bang.