Let's establish the commencement dates for each: III. Wildlife Protection Act: Enacted in 1972. I. Project Tiger: Launched in 1973. II. Project Elephant: Launched in 1992. IV. Biological Diversity Act: Enacted in 2002. Arranging them in chronological order gives: 1972 (III), 1973 (I), 1992 (II), 2002 (IV).