- Ex situ conservation (Option 1): This method protects species outside their natural environments, such as in zoos, botanical gardens, and seed banks.
- In situ conservation (Option 2): This method conserves species within their natural habitats. Wildlife safari parks exemplify this by maintaining animals in their ecosystems with managed interventions for biodiversity protection.
- Biodiversity hot spots (Option 3): These are biologically rich areas threatened by human activities. While safari parks can be in hot spots, "hot spots" describes a location, not a conservation method.
- Sacred groves (Option 4): These areas are protected due to religious or cultural significance, distinct from formal wildlife conservation processes.
Step 2: Conclusion.
Wildlife safari parks are examples of in situ conservation because they preserve species in their natural settings.
Final Answer: [\boxed{\text{The correct answer is (2) In situ conservation.}}]