Oxygen meter
Oxygen sensor
Oxylizer
None of these
Compression engines
Spark ignition engine
Both (A) and (B)
Self locking brakes
Air bags
Skid proof tires
Air bags are considered as a supplemental restraint system. Supplemental Restraint System (SRS) is a label used to indicate the airbag is part of a broader safety system and should not be used alone. In this case, air bags supplement safety belts.
Spindle
Tie rod
Differential
T-Joints
Ball Joints
Straight joints