Final answer:
To identify Sample A, refer to the Mineral Key and match its properties with a mineral. Submit the name of the matching mineral in the Gizmo.
Step-by-step explanation:
Sample A is a mineral that needs to be identified based on its properties. To determine the mineral, the student should refer to their Mineral Key and look for a mineral that matches the properties of Sample A. They should type the name of the matching mineral under the 'Mineral name' in the Gizmo and press Submit. It may take several guesses to get the right answer.