Which of the following animals can travel with their owner in the cabin without restrictions?

The correct answer is that birds, cats, and dogs are generally allowed to travel in the cabin with their owners, reflecting a wider range of accepted travel companions for passengers than other options suggest. Many airlines have policies that permit small pets like dogs and cats to be transported in the cabin, usually under specific conditions such as size restrictions and the use of an appropriate carrier.

Additionally, some airlines allow birds as well, which can also be brought on board if they meet certain size and health requirements. This inclusion emphasizes the flexibility of regulations regarding pet travel, allowing for a greater variety of pets compared to the other options, which limit travel companions to narrower categories.

The other choices do not account for this inclusion of multiple species or impose unnecessary restrictions, highlighting that option C is the most accurate in representing what can typically travel with passengers in the cabin.