The correct answer is "secure liberty." The preamble to the Constitution does not mention "domestic tranquility," "establish justice," or "general welfare" as specific purposes of protecting citizens' rights. To find the answer to this question, you can refer to the preamble of the Constitution. The preamble is the introductory statement in the Constitution that provides the goals and purposes of the government. By reading and analyzing the preamble, you can identify the specific language used to describe the Constitution's purpose of protecting citizens' rights. In this case, the phrase "secure liberty" is the correct answer.
