Final answer:
To determine canal configuration, you would use otoscopic inspection, observe the pinna on the head, and ask the patient, making the correct answer D. all of the above.
Step-by-step explanation:
To determine canal configuration, one would use an otoscopic inspection. This involves looking into the ear canal with a special instrument called an otoscope to view the ear canal and eardrum. Additionally, observing how the pinna sits on the side of the head can also provide some information, as certain ear shapes or positions might suggest a particular configuration of the ear canal. Lastly, asking the patient about their ear and hearing experiences can sometimes offer clues about the ear canal's structure, although this would be more subjective.
The correct answer for the student's question is therefore D. all of the above, as all methods can contribute to understanding the ear canal's structure