Read the following excerpt from a student essay. How can the writer best improve his or her academic voice?
The belly produces acid to break down food. In patients who suffer from gastroesophageal reflux disease, more commonly known as GERD or acid reflux, the acid moves backward into the eating tube. Most often, GERD occurs because the lower esophageal sphincter, the thing at the junction of the eating tube and the belly, doesn't close the way it should or opens at the wrong time.

 - by using unbiased language
 - by avoiding first-person pronouns
 - by using more technical terms
The writer could best improve his or her academic voice by using more technical terms.
For example, the writer could use technical terms for the underlined words: stomach, esophagus, and valve.
The belly produces acid to break down food. In patients who suffer from gastroesophageal reflux disease, more commonly known as GERD or acid reflux, the acid moves backward into the eating tube. Most often, GERD occurs because the lower esophageal sphincter, the thing at the junction of the eating tube and the belly, doesn't close the way it should or opens at the wrong time.