[Solved] What is meant by behavioral complexity? A)The ability to act out a cognitively complex strategy by playing multiple, even competing, roles in a highly integrated and complementary way B)The ability to act in different ways under different circumstances C)The number of different competencies that and individual is aware of and can apply in different situations D)The number of different ways that an individual is able to "see" a situation and come up with alternative approaches for responding to that situation E)None of these is the meaning of behavioral complexity Digestive Tube: A continuous hollow tube extending from the mouth to the anus, through which food is processed and nutrients absorbed. Plankton: Free-floating, mainly microscopic aquatic organisms found in the upper layers of the water; consisting of phytoplankton and zooplankton. Compare with nekton. Microscopic Organisms: Organisms too small to be seen with the naked eye, often including bacteria, archaea, some fungi, and protists. Anus: The distal end and outlet of the digestive tract.