What is the coastal city known for the 'Whitsunday Islands'?

Airlie Beach is the correct answer because it is widely recognized as the gateway to the Whitsunday Islands, a stunning archipelago located off the central coast of Queensland. This town serves as a popular base for tourists exploring the islands, offering access to activities such as sailing, snorkeling, and resorts on the islands themselves.

Cairns, Townsville, and Port Douglas are significant coastal cities in Queensland known for their attractions, but they do not serve the same pivotal role concerning the Whitsunday Islands. Cairns is better known for its access to the Great Barrier Reef, Townsville is recognized for its proximity to Magnetic Island, and Port Douglas is famous for Four Mile Beach and also attracts visitors heading to the Great Barrier Reef, but none are directly associated with the Whitsunday Islands in the same way Airlie Beach is.