The answer you're looking for is Panda because a panda has an organ system, the other choices are all microscopic organisms so they don't have an organ system
Hope this helped you out :)
The answer to this question would be: visceral motor
The muscle in the stomach is not consciously moved. The muscle regulated automatically by the nervous system based on some mechanism like other organs. The things that can influence the muscle would be when the autonomous nervous system is activated. This kind of motor innervation is called visceral motor.
