Alonso is studying for a test. In order to help understand the term cardioesophageal sphincter, he recalls that cardio means "heart" and "esophageal" is related to the esophagus. This helps him to recall that the cardioesophageal sphincter
is the muscle closure at the end of the esophagus just behind the heart.
What technique is Alonso utilizing?

A participating in mock instruction

B analyzing diagrams

C breaking down terminology

D making flash cards