A decrease in the curvature of the lens with age

A decrease in the strength of ciliary muscle contraction

An increase in the strength of ciliary muscle contraction

A decrease in the curvature of the cornea with age

A decrease in the strength of pupillary contraction

A decrease in the ability of the lens to change curvature

A decrease in the ability of the cornea to change curvature

An increase in the power of accommodation

Hearing sensitivity relative to the background noise 

Hearing sensitivity relative to normal hearing

Hearing sensitivity relative to 20 μPascals

Hearing sensitivity relative to 0 dB Sound Pressure Level

Hearing sensitivity relative to the hearing of others in the class 

D

A

E

B

F

G

A

C

E

B