Final answer:
The instrument used for auditory and sensory perception is the Otoscope, a medical tool used to examine the ear canal and eardrum for possible infections or conditions.
Step-by-step explanation:
An instrument used for auditory and sensory perception is called the Otoscope. This medical tool is used by healthcare professionals to examine the condition of the ear canal and tympanic membrane, or eardrum. It is especially helpful in diagnosing infections, buildup of earwax, or other ear problems. The otoscope provides a clear view of the ear canal and tympanic membrane, which play critical roles in the perception of sound. It's important to note that this tool does not relate to the ultrasound frequencies mentioned in options, which are much higher than humans can hear and are used for noninvasive medical diagnoses such as observing a fetus.
Other instruments listed include the Ophthalmoscope, which is used for eye examinations, the Laryngoscope for vocal cords, and the Sphygmomanometer for measuring blood pressure. Knowledge of the functioning of different diagnostic tools like the otoscope can help in understanding the various techniques employed for assessing the health of sensory organs.