What is required to legally transport a firearm in a vehicle in Hawaii?

In order to legally transport a firearm in a vehicle in Hawaii, the firearm must be unloaded and stored in the trunk. This is to ensure the safety of the driver and passengers, as well as others on the road. Option B is incorrect because it is illegal to openly carry a firearm in a vehicle in Hawaii. Option C is also incorrect because the firearm must not be visible in the vehicle. Option D is incorrect because a person must have a valid firearm permit in addition to following the requirement of storing the firearm unloaded in the trunk. Violating these regulations can result in serious consequences.