Final answer:
The sample's hardness indicates that it could be made of fluorite or apatite because these minerals have appropriate hardness levels to be scratched by glass but not by a fingernail.
Step-by-step explanation:
If a mineral sample can be scratched by glass but not by a fingernail, it indicates that the mineral falls between these two hardness values on the Mohs hardness scale. Glass usually has a hardness of around 5.5 on the scale, while a fingernail has a hardness of about 2.5. Given this information and the options provided, the minerals that could match the sample's hardness are likely to be fluorite (which has a hardness of 4) and apatite (which has a hardness of 5), as they are the only minerals from the options provided that are harder than a fingernail but not as hard as glass. Gypsum, with a hardness of 2, would be too soft as it can be scratched by a fingernail. Orthoclase, with a hardness of 6, is too hard as it can scratch glass.