**Core Concept**
Australia has been declared a rabies-free country due to its strict quarantine regulations and geographic isolation from countries with endemic rabies. This status is maintained through the country's rigorous importation and exportation protocols, ensuring that no infected animals enter the country.

**Why the Correct Answer is Right**
Australia's status as a rabies-free country can be attributed to its unique geography, which comprises over 8,000 islands, making it difficult for infected animals to migrate and spread the disease. Additionally, the country's strict regulations on importing animals and animal products help prevent the introduction of rabies. The Australian government also conducts regular surveillance and monitoring of animal populations to detect any potential outbreaks early.

**Why Each Wrong Option is Incorrect**
**Option A:** The USA has reported cases of rabies, particularly in wildlife such as bats, raccoons, and skunks, making it not a rabies-free country.

**Option B:** Russia has a large landmass and shares borders with countries where rabies is endemic, increasing the risk of animal migration and disease transmission.

**Option D:** France has reported cases of rabies, particularly in the past, and while it has made significant strides in controlling the disease, it is not considered a rabies-free country.

**Clinical Pearl / High-Yield Fact**
It's essential to note that a country can be declared rabies-free if it has not reported a human case of rabies in the past 2 years, and the disease is not present in its animal population. This status is subject to regular review and verification by international health authorities.

**✓ Correct Answer: C. Australia**