Step 1: What is asked.
We need the country whose tourism Katrina Kaif now promotes as global brand ambassador.
Step 2: Why ambassadors.
Tourism boards hire famous faces to attract more travellers, mainly from big markets like India.
Step 3: The partnership.
The Seychelles Tourism Board picked a high profile star to promote its islands to Indian tourists.
Step 4: The name.
Katrina Kaif was signed as the global brand ambassador for Seychelles Tourism.
Step 5: Remove others.
Mauritius, Bali, and Maldives are not the country in this appointment.
Step 6: Conclusion.
So the country is Seychelles.
Answer: Seychelles