Question: New American Library is an imprint of this company, founded by a merger between Publishers Random House and Penguin Group?
Context: Random House Studio is a production company responsible for adapting books published by Penguin Random House to film and TV.  The company, originally owned by Penguin Random House (currently a joint venture between Bertelsmann and Pearson), was transferred to Penguin Random House's grandniece company via its co-owner Bertelsmann FremantleMedia North America in 2016. Vintage Classics is a paperback publisher of contemporary fiction and non-fiction.  It is part of the Vintage imprint, which is itself a part of Random House Publishers.  The famous American publisher Alfred A. Knopf (1892–1984) founded Vintage Books in the United States in 1954 as a paperback home for the authors published by his company.  Vintage was launched in the United Kingdom in 1990 and works independently from the American imprint although both are part of the international publishing group, Random House.  Vintage in the UK is run by a small team of people working in the Random House offices in Pimlico in London. Villard, also known as Villard Books, is a publishing imprint of Random House, one of the largest publishing companies in the world.  It was founded in 1983.  Villard began as an independent imprint of Random House and is currently a sub-imprint of Ballantine Books, itself an imprint of Random House.  It was named after a Stanford White brownstone mansion on Madison Avenue that was the home of Random House for twenty years. The Penguin Group is a trade book publisher, part of Penguin Random House.  It is owned by Pearson PLC, the global education and publishing company, and Bertelsmann, the German media conglomerate.  The new company was created by a merger that was finalized on 1 July 2013, with Bertelsmann owning 53% of the joint venture, and Pearson controlling the remaining 47%. Bantam Books is an American publishing house owned entirely by parent company Random House, a subsidiary of Penguin Random House; it is an imprint of the Random House Publishing Group.  It was formed in 1945 by Walter B. Pitkin, Jr., Sidney B. Kramer, and Ian and Betty Ballantine.  It has since been purchased several times by companies including National General, Carl Lindner's American Financial and, most recently, Bertelsmann; it became part of Random House in 1998, when Bertelsmann purchased it to form Bantam Doubleday Dell.  It began as a mass market publisher, mostly of reprints of hardcover books, with some original paperbacks as well.  It expanded into both trade paperback and hardcover books, including original works, often reprinted in house as mass-market editions. Plume is a publishing company in the United States, founded in 1970 as the trade paperback imprint of New American Library.  Today it is a division of Penguin Group, with a backlist of approximately 700 titles. Roc Books is a fantasy imprint of Penguin Group, as part of its New American Library.  It was launched in April 1990 after Penguin Chairman Peter Mayer asked John Silbersack, the editor in chief of New American Library's science-fiction program, to launch a new imprint that would draw more attention to Penguin's SF presence.  The name Roc Books was chosen as a homage to Penguin's many famous bird-named publishing imprints.  Roc was named after the enormous predatory bird of the Arabian Nights.  After Penguin's merger with G.P. Putnam's Sons the imprint was aligned with Ace books and the current editorial team at Roc is the same team that edits the Ace imprint, although the two imprints maintain a separate identity. Rooftops of Tehran, a novel written by Mahbod Seraji, was published by New American Library, an imprint of the Penguin Group, in May 2009. Penguin Random House (PRH) is a company formed by the merger of book publishers Random House (owned by German media conglomerate Bertelsmann), and Penguin Group (owned by British publishing company Pearson PLC).  It was formed on July 1, 2013, upon the completion of a £2.4 billion merger between Bertelsmann and Pearson.  Random House and Penguin Group, the parent companies own 53% and 47%, respectively. The New American Library (NAL) is an American publisher based in New York, founded in 1948.  Its initial focus was affordable paperback reprints of classics and scholarly works, as well as popular and pulp fiction but now publishes trade and hardcover titles.  It is currently an imprint of Penguin Random House; it was announced in 2015 that the imprint would publish only nonfiction titles.
Answer: Penguin Random House