Final answer:
Drawing conclusions based on gathering expert opinions is the step that least describes the scientific method, as it differs from the empirical approach of direct observation and experimentation.
Step-by-step explanation:
The step that least describes a scientific method is C. drawing conclusions based on gathering expert opinions. The scientific method is a process that involves making observations, asking questions, forming a hypothesis, testing the hypothesis, and then drawing conclusions. Gathering expert opinions may inform a hypothesis but is not a core part of the empirical data collection and experimentation that characterizes the scientific method.