Kerala Tourism is the state government department responsible for:

Promoting tourism
Developing infrastructure
Marketing the destination
All of the above

The correct answer is: D) All of the above.

Kerala Tourism is a state government department responsible for promoting tourism, developing infrastructure, and marketing the destination.

Kerala Tourism is responsible for promoting Kerala as a tourist destination. This includes developing marketing campaigns, organizing events and festivals, and working with travel agents and tour operators.

Kerala Tourism is also responsible for developing infrastructure that supports tourism. This includes building roads, airports, and hotels, as well as providing water and electricity to tourist destinations.

Finally, Kerala Tourism is responsible for marketing Kerala as a destination. This includes developing a website, creating brochures and other marketing materials, and participating in trade shows and travel fairs.