Answer:
D. The life of the typical college student is characterized by time spent studying, attending class, and socializing with peers.
Step-by-step explanation:
The thesis statement can be improved by describing the different areas of life that characterize a typical college student. In this new thesis, it is clear to see that a typical college student studies, attends class, and socializes with peers. In the first thesis statement, it is unclear what college students do.