This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to know if your wheel bearings are going bad
Listen for snapping or popping when you turn.
Snapping, popping, and clicking are all signs that the outer cv joint, which is the joint that connects your wheel to the axle, is starting to wear out. Sometimes, more severe turns will create a louder snapping or popping noise.

Possible answers: (a). If you hear this while you're driving, there's a good chance you have a bad axle. Listen to what side the rattling is on, so you have an idea of which wheel bearing is going bad.. (b). If this occurs, it's time to get the vehicle back on the road. Hard or caving bends and turns are very common and cause a lot of problems for your wheel bearings.. (c). Watch for sudden and unpredictable snapping and pops as the wheel spins. Possible breaks in the cv joint are : Split.. (d). If this is the case, seek medical attention. When you hear popping or popping, this can be because your wheel's cv joint is getting too loose..
The answer is:
(a).