Damage to the ear from loud noise is healed and back to normal quickly

An x-ray, chest, two views, frontal and lateral, is reported with code:

A. 71020. B. 76604. C. 76645. D. 71010.

Carrier molecules help move substances from an area of low concentration to an area of high concentration by 

A. diffusion. B. osmosis. C. filtration. D. active transport.