Preamble is what in the constitution

This is what a preamble is, "A preamble is an introductory and expressionary statement in a document that explains the document's purpose and underlying philosophy. When applied to the opening paragraphs of a statute, it may recite historical facts pertinent to the subject of the statute."

The Preamble is the opening statement to the United States Constitution. Thepreamble explains the reasons why the Framers of the Constitution made our government a republic. By doing this, the founding fathers replaced the Articles of Confederation.

Idont know which one is right   but i know that c is wrong and a might be wrong