Obstruction of the structure identified here ( left middle, open space)is most likely to occur from:
1. bubble gum
2. blood clot
3. hyperostosis
4. wax
5. infection

Answer: #4: wax, why? The ceruminous glands of the external auditory canal, in some persons, produce excessive amounts of ear wax that can occlude this canal and diminish hearing. Gentle irrigation with warm water is a good means to remove the wax.