Which argument for the existence of God are the authors conv…

Which argument for the existence of God are the authors conveying in the statement: “When intelligent agents act, they leave behind a characteristic trademark or signature—what I define as specified complexity”?   Michael J. Behe, William A. Dembski, and Stephen C. Meyer, Science and Evidence for Design in the Universe, The Proceedings of the Wethersfield Institute, vol. 9 (San Francisco: Ignatius Press, 2000), 23.