Final answer:
The ideal tympanic temperature, measured in the ear, is the widely recognized average normal body temperature of 98.6°F.
Step-by-step explanation:
An ideal tympanic temperature, which is the temperature measured in the ear, corresponds to the average normal body temperature. The average normal body temperature is 98.6°F (37.0°C).
Therefore, the answer to the student's question is 'D. 98.6°F'. This is the temperature commonly accepted as normal for a healthy person. It is important to note that body temperature can vary from person to person and can be influenced by various factors, including time of day and activity level.
While the typical range for body temperature is between 97.7°F to 99.5°F, the ideal tympanic temperature is aligned with the widely recognized average of 98.6°F.