What pathophysiologic process has characterized her diagnosis?

A 29-year-old woman has been diagnosed with otosclerosis after several years of progressive hearing loss. What pathophysiologic process has characterized her diagnosis?
New, sclerotic bone has been formed around her stapes and oval window.
Her incus, malleus, and stapes have become disconnected from her normal neural pathways.
Her temporal bone is experiencing unusually rapid resorption.
Her tympanic cavity is becoming filled with bone due to inappropriate osteogenesis.