Let's examine the launch years of the initiatives: - Project Tiger was launched in 1973. - Project Elephant was launched in 1992. - Project Snow Leopard was launched in 2009. - Project Dolphin (specifically the national mission for Ganges River Dolphin) was announced in 2020, although the Ganges Dolphin was declared the National Aquatic Animal in 2009. Comparing the launch dates, Project Tiger (1973) is the earliest among the options.