Read the following excerpt from a student essay. How can the writer best improve his or her word choice?
One concern in sports is the risk of concussion, or brain injury. If you hit your head on the field, how do you know whether you have a concussion? Some possible signs are feeling dizzy or headachy for more than a few minutes, having blurred vision, and barfing or feeling like barfing. You might also have trouble thinking or concentrating, feel spaced out or unusually blubbery, or jabber in a way that doesn't make sense. If you have any of these symptoms, see a doctor right away.
A. by including more figurative language
B. by fixing misused words
C. by avoiding overly informal language
Pick the correct answer from the listed options and provide the letter of the selected option.

C