b. NATURE / Biology (genetics, brain chemistry & hormones effect on behavior
Explanation:
According to the principles of evolutionary psychology, the human and animal behavior are subconsciously determined by the inter-connected network neural network such that humans and animals are unmindful of the process or order in which the conclusions and behavioral decisions are arrived at. As such human behavior within a given environment is directed by the natural brain in which the interconnection of the senses or the neural circuit is shaped by natural selection.
