if ____ are present, then lubrication must be performed.\n\na. steering knuckles\nb. ball joints\nc…

if ____ are present, then lubrication must be performed.\n\na. steering knuckles\nb. ball joints\nc. stabilizer bar bushings\nd. grease fittings
Answer
Brief Explanations:
Grease fittings are specifically designed for lubrication. When they are present, lubrication is required to ensure proper functioning of the mechanical components. Steering knuckles, ball - joints, and stabilizer bar bushings may need lubrication but the presence of grease fittings directly indicates the need for lubrication.
Answer:
d. Grease fittings