Which one of the following has been adopted by World Wild Life Fund as its mascot ?

The World Wide Fund for Nature (WWF), formerly known as the World Wildlife Fund, adopted the Giant Panda as its official mascot and logo upon its founding in 1961 [t1][t6]. The inspiration for the mascot was Chi-Chi, a giant panda that had arrived at the London Zoo that same year [t4][t8]. The founders, including Sir Peter Scott and Gerald Watterson, chose the panda because it was a beautiful, endangered species with widespread popular appeal [t3][t9]. Additionally, the panda's distinctive black and white coloring was strategically selected to minimize printing costs for the organization's promotional materials [t9]. Over the decades, the panda has evolved from a simple logo into a global symbol for the conservation movement and remains the primary brand asset for the WWF network [t4][t8].