Answer:
D). Monochromic.
Explanation:
'Monochromic' culture corresponds to a belief in a systematic and orderly discipline and likes to focus on one action at a time. The people belonging to such cultures follow a rigidity towards schedules and punctuality. They strictly follow the organized structure of work indispensably as an indispensable element of their life.
As per the given description, Casey is most likely belonging to a 'monochronic culture' as reflected by her 'obsession and rigidity' towards punctuality and her strict adherence to time and schedules('getting up at 7:30, practicing baseball at 8:20, etc.) clearly demonstrate that she strongly believes in the orderly and systematic discipline that is the prime notion of monochromic cultures. Therefore, option D is the correct answer.