Explanation:

- International Tiger Day is celebrated annually on July 29th to raise awareness for tiger conservation. The World Wildlife Fund (WWF) plays a significant role in these initiatives.

- ?? Option 1: United Arab Emirates - The UAE is known for environmental efforts, but it is not the WWF's headquarters.

- Option 2: Switzerland - WWF's headquarters is in Gland, Switzerland, where strategic global conservation efforts are coordinated.

- ?? Option 3: USA - While the USA hosts various environmental organizations, WWF's global HQ is not based here.

- ?? Option 4: Philippines - The Philippines focuses on regional conservation but is not WWF's HQ location.

- ?? Option 5: California - Known for tech and nature, California is not the headquarters of WWF.

Option:2- Switzerland is the correct answer for WWF's headquarters location. .