Answer:
Question is incomplete i have added full question with explanation and reaction see attachment.
Answer: C
Explanation: It isn't impossible to pollute and it is a usable water source AKA wells
Venus is the answer, you can tell easily because Venus has no moons or rings :)
The vestibulocochlear nerve mediates hearing and balance. Hearing can be assessed with a 512-Hz tuning fork. The Rinne and Weber tests are commonly used to assess for sensorineural and conductive deafness.