Question

the cochlear implant ______ the cochlear.
partners with
circumvents
replaces

Explanation:

To determine the correct verb, we analyze the function of a cochlear implant. A cochlear implant doesn't "partner with" the cochlear (as it's a device for those with hearing loss in the cochlea) or "replace" it entirely (it works with the remaining structures). Instead, it "circumvents" the damaged parts of the cochlea to transmit sound signals.

Answer:

B. circumvents