An ex-post-facto law is a law applied retroactively. Usually it makes an act illegal that was legal at the time it was performed. The U.S. Constitution prohibits ex-post-facto criminal laws, although the British Commonwealth allows them. According to this passage, it can be assumed that:

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Accepted Answer

Because the U.S. Constitution prohibits these kinds of laws, ChoiceA.is incorrect. The passage doesn't support ChoiceB.The passage states that the British Commonwealth allows ex-post-facto laws, so ChoiceD.is incorrect.

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