Final answer:
To measure the mass of a small object like an apple, a scale or balance would be used, with measurements usually in grams. Mass does not change with location and is distinct from weight, which involves gravitational force. The actual mass of the apple in the Gizmo is unknown without direct observation.
Step-by-step explanation:
When measuring the mass or weight of a small object like an apple, you would typically use a scale or a balance. For such measurements, the unit of mass is usually the gram (g). It's important to note that mass is different from weight; mass is the amount of matter in an object and is constant regardless of location, while weight is the force of gravity acting on that mass. A standard kilogram was historically defined as the mass of one liter of water at 4°C, and scales must be calibrated with a standard mass to ensure their readings are accurate.
As for the Gizmo, without access to the actual interactive or results of the scale, it is impossible to determine the apple's mass. Provided options include 100 g, 50 g, 200 g, and 75 g, which are typical measurements for the mass of an apple. The correct reading would depend on observing the scale measurement directly in the Gizmo simulation.