Plz Hurry I don't have much time What protects a citizen from being punished for an act that only became a crime after the act was committed?

A. the right to petition for a writ of habeas corpus
B. the unenumerated rights of the Ninth Amendment
C. the Constitution’s prohibition of ex post facto laws
D. the powers reserved to citizens by the Tenth Amendment

Hello! Your answer should be D. the powers reserved to citizens by the Tenth Amendment

Explanation:

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the crusades are one of the most significant events in the history of europe and the middle east.   they were a series of religious wars carried out by christian crusaders from europe during the timeframe of the middle ages.   beginning in 1095 ce, the crusades saw european knights and noblemen travel to the middle east in an attempt to capture the holy land away from muslim people that had controlled the region for the previous centuries.   the term crusade means ‘cross’.   therefore, the europeans that became crusaders viewed themselves as ‘taking up the cross’.   in fact, many of the crusaders wore crosses on their clothing and armor as they made their pilgrimage to the holy land.

explanation:

b. the passage of the equal rights amendment  

explanation:

this mean that anything that someone else could do they could do