Final answer:
Without a visual representation, it is not possible to determine the specific structure being referred to in the figure. The ear's external components include the pinna and the external auditory meatus, which leads to the tympanic membrane.
Step-by-step explanation:
The external ear consists of several components of which the pinna and the external auditory meatus (also known as the auditory canal) are a part. The pinna is the visible part of the ear that is on the outside of our heads, which helps to collect sound waves and direct them into the ear canal. The external auditory meatus is the pathway that leads to the eardrum. At the end of this canal lies the tympanic membrane, which is another term for the eardrum. The tympanic membrane vibrates in response to sound waves. Based on the information provided, without seeing the figure in question, it is not possible to determine exactly which structure is being shown. Hence the correct answer is option 4) Cannot be determined.