Answer:
C. Precedent.
A precedent is a principle or rule established in a previous legal case that is either binding on or persuasive without going to courts for a court or other tribunal when deciding subsequent cases with similar issues or facts.
Parentheses->Exponents->Multiplication->Division->Addition->Subtraction
They make sure the procedure can be repeated, so that other scientists can evaluate their findings. Scientists organize their data in tables, graphs, or diagrams.
Answer:
D. Move the comma to after the word once.
Explanation:
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Where things are i would check a text book i i were you