'This treatise developed from an initial idea about the way a plant develops from a seed.' The preceding sentence is an example of which literary device and argument method?

The Florida Teacher Certification Exam (FTCE) English 6-12 is a test that all educator candidates must pass in order to teach English at the middle and high school levels in Florida.
The five skillstested are as follows:

1. Effective use of the English language at the post-secondary level
2. Effective writing skills
3. Literacy processes across genres
4. Wide range of fiction, nonfiction, and informational texts
5. Critical responses to media