For otitis media to be considered chronic, it must have
a. occurred in the last six months.
b. a significant impact on learning.
c. lasted twelve weeks or more.
d. been present from birth.
Question 2
The most common cause of conductive hearing loss is
a. accidents.
b. neurological deterioration of the cochlea.
c. desensitization of the auditory nerve over time.
d. middle ear infection.