Question: It seems an impossible task to try and understand how humans and animals learn all the things they do in all the different ways that they do. What do researchers in this field (Learning) do to make it an achievable task? Question options: a) Spend long hours in the laboratory with the help of many research assistants. b) Look for general principles that will predict how animals and humans learn in a variety of situations. c) Focus on one species of animal and a very specific aspect of learning. d) Take a reductionist approach that focuses the most fundamental units of learning. e) Perform tightly uncontrolled experiments that reduce as many variables as possible to reduce the chances of Type I and Type II errors when they do their statistical analysis.