Question

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Explanation:

Identify the context of the scientific investigation

The question asks "What might Mary and Jim do next?" in the context of a scientific inquiry. Based on the Scientific Method, after formulating a hypothesis or performing initial observations (such as mineral identification tests), researchers must proceed to the next logical phase of investigation.

Determine the next logical scientific step

Using Designing Experiments and Formulating Hypotheses, if Mary and Jim have already gathered initial observations or proposed a hypothesis, their next step is to design and conduct a controlled experiment to test their hypothesis, or collect further systematic data to analyze.

Formulate a comprehensive recommendation

A complete scientific process requires testing predictions. Mary and Jim should design a controlled experiment, identify independent and dependent variables, and gather measurable data to support or refute their hypothesis.

Answer:

Mary and Jim should design and conduct a controlled experiment to test their hypothesis, ensuring they identify their variables and collect measurable data to analyze.