Read the passage. Amending the Constitution of the United States is difficult, tedious, and time-consuming. Once an amendment is proposed, two-thirds of both the Senate and the House of Representatives must ratify, or approve, it. Next, three-fourths of the state legislatures must ratify it. Only then will the proposed amendment become law. Which text structure is used in this passage?

The passage explains the steps for amending the Constitution in the order they happen: first Congress approves the amendment, then three-fourths of the state legislatures approve it, and only then does it become law. This step-by-step order is a sequence structure. It is not mainly describing a problem and its solution or comparing two things.

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