Answer the following question given this paragraph: 

Could a mineral be made by a process that was not natural? People make gemstones in a laboratory. Synthetic diamond is a common one. But that stone is not a mineral. That's because a mineral must be created by natural processes. This is part of the definition of a mineral.


Q: Why is a synthetic diamond not considered a mineral?

 Choices:

- fluctuations must be created naturally

- Minerals must not occur naturally.

- interactions must be created naturally

- minerals must be created naturally

A:
minerals must be created naturally
