WWF (World Wide Fund for Nature) is an important international effort for the conservation of biodiversity. The organization is dedicated to protecting the world's natural resources and promoting sustainable development. It works in collaboration with governments, businesses, communities, and individuals to address the threats to biodiversity and create a more sustainable future. Here are the reasons why WWF is the correct answer:

1. Global Presence:
WWF operates in more than 100 countries and has a network of offices and partners worldwide. Its global presence allows it to effectively address biodiversity conservation issues on a large scale.

2. Conservation Projects:
WWF implements numerous conservation projects aimed at protecting endangered species, conserving critical habitats, and promoting sustainable practices. These projects range from protecting iconic species like tigers and elephants to preserving fragile ecosystems such as coral reefs and rainforests.

3. Policy Advocacy:
WWF actively engages in policy advocacy at national and international levels. The organization works with governments, businesses, and other stakeholders to shape policies and regulations that support biodiversity conservation. It also participates in international conventions and conferences to promote sustainable practices and raise awareness about the importance of biodiversity.

4. Community Engagement:
WWF recognizes the importance of involving local communities in conservation efforts. It works closely with indigenous people and local communities to ensure their participation in decision-making processes and to promote sustainable livelihoods that are compatible with biodiversity conservation.

5. Corporate Partnerships:
WWF collaborates with businesses to promote sustainable practices and reduce their environmental impact. Through corporate partnerships, WWF encourages companies to adopt environmentally responsible policies, reduce carbon emissions, and support biodiversity conservation initiatives.

6. Public Awareness and Education:
WWF plays a crucial role in raising public awareness about biodiversity conservation. It conducts educational campaigns, produces informative materials, and utilizes digital platforms to engage and educate the public about the value of biodiversity and the need for its protection.

7. Fundraising:
WWF relies on public and private funding to support its conservation projects and initiatives. The organization actively fundraises through donations, grants, and partnerships to ensure the continuity of its work.

In conclusion, WWF is an important international effort for biodiversity conservation due to its global presence, conservation projects, policy advocacy, community engagement, corporate partnerships, public awareness and education initiatives, and fundraising efforts.