Which Assessment Demonstrates the Nurse's Understanding of the Relationship Between

Which assessment demonstrates the nurse's understanding of the relationship between substance abuse and the development of symptoms characteristic of delirium?

A) Determining the patient's age and gender
B) Evaluating the patient's food and fluid intake over the last 48 hours
C) Observing the patient for fine tremors of the hands, especially the fingers
D) Determining the amount of caffeine the patient ingested in the last 24 hours