The correct answer is A. The world revised could replace "amended" in the sentence.
Explanation:
The sentence refers to a bill that is being debated in the Senate, which has approved with the vote the bill so that it becomes law. In order to reach such an agreement, the Senate has made it possible to review the bill and amend possible errors or disagreements in it, with the aim of a greater probability of approval. This act of revising and correcting a bill to become a law is known as revising.