Final answer:
The doctor checked to see if the injured man was lucid by asking him his name and what day of the week it was. This is a common practice in medicine to assess a patient's level of awareness and orientation to time and personal identity.
Step-by-step explanation:
The subject of this question is Medicine. The doctor checked to see if the injured man was lucid by asking him his name and what day of the week it was. This is a common practice in medicine to assess a patient's level of awareness and orientation to time and personal identity. If the patient is unable to provide the correct answers, it may indicate a cognitive impairment or confusion.