Final answer:
Testing a prototype is not typically a part of the scientific method used in basic scientific investigations, which include steps like forming a hypothesis, designing experiments, and drawing conclusions. The correct answer is option 1.
Step-by-step explanation:
When scientists conduct scientific investigations, they use the scientific method, which is a process that helps ensure their research is valid and reliable. This method includes several steps such as making observations, forming a hypothesis, designing experiments, testing the hypothesis, drawing conclusions, and communicating results. Among the choices provided: 'Test a Prototype,' 'Design Investigations,' 'Construct a Hypothesis,' and 'Draw Conclusions,' testing a prototype is generally not a part of the core scientific method process. While prototyping can be a part of more applied sciences like engineering, it is not typically a step in basic scientific investigations, which focus on using experiments to test hypotheses.