Answer:
The answer to this question is the Ear.
Explanation:
The ear converts sound waves, which are mechanical vibrations of a medium such as air, into electrical impulses that are processed and understood as sounds in the brain. The visible portion of the ear, the ear flap, acts as a funnel to channel sound waves into the auditory canal. Because of problems with the ear being quite important it would make sense for this organ to be artificially reproduced first.
Hopefully I helped :)
