The correct answer is:
<span>A. the process of formal approval
This word can be found for example in the context of ratification of constitutional Amendments by the states: It's a process of formal adoption of those amendments, a process of formal approval.
Similarly, international treaties have to be often ratified by the parliaments.
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<u><em>Abraham Lincoln our 16th President assassinated by John Wilkes Booth on Friday, April 14, 1865, while attending to play the President Act In Washington D.C</em></u>
C. preemption is the answer to your question.
I hope I helped.