Concept:WWF is an international non-governmental organization focused on wildlife conservation and environmental protection.
Explanation:The full form of WWF is World Wildlife Fund.
It was established in 1961 and has its headquarters at Gland, Switzerland.
Its main goals are preserving biodiversity, promoting sustainable use of renewable resources, and reducing pollution and wasteful consumption.
WWF is the world's largest conservation organization.
Its logo features a giant panda named Chi-Chi.
WWF publishes the Living Planet Report every two years since 1998 and also organizes Earth Hour.
Among the given options, only "World Wildlife Fund" matches the correct expansion.
Answer:C. World Wildlife Fund