Question

myopia is caused by an abnormal curvature of the lens.
question 23
a cochlear implant is a device to improve bone conduction hearing loss.

Explanation:

Myopia (nearsightedness) is mainly caused by an elongated eyeball or an abnormal curvature of the cornea, not the lens. A cochlear implant is used to treat sensorineural hearing loss (damage to the inner ear or auditory nerve), not bone - conduction hearing loss. Bone - conduction hearing aids are more relevant for bone - conduction hearing loss.

Answer:

B. False (for the first statement)
B. False (for the second statement)