Answer the following question given this paragraph: 

The plot that we know of as a graph was the brainchild of the French mathematician-philosopher Rene Descartes (1596-1650). His studies in mathematics led him to develop what was known as “Cartesian geometry”, including the idea of our current graphs. The coordinates are often referred to as Cartesian coordinates.


Q: What do we call the mathematical field of study credited to french mathematician-philosopher rene descartes?

 Choices:

- algebra

- Euclidean geometry

- calculus

- cartesian geometry

A:
cartesian geometry
