What is the purpose of the Third Amendment?

Which best describes the basis for the right to privacy in the united states? a. the right to privacy is a civil liberty that places limits on government power through the constitution, especially the bill of rights. b. in griswold v. connecticut, the supreme court defined the right to privacy by incorporating the fourth amendment and the right of people to be secure; the self-incrimination clause of the fifth amendment; the ninth amendment; and the due process clause of the 14th amendment. c. the right to privacy is embodied in the words of u. s. justice louis brandeis, "the right to be left alone." d. the term privacy is not in the constitution or bill or rights but it does exist.