Answer: A- Unsprung mass is kept minimum
The vehicle ride will be comfortable if the unsprung mass is kept minimum.
The mass of the suspension, wheels or tracks (as applicable), and other parts that are directly connected to them, such as wheel axles, wheel bearings, wheel hubs, tires, and a portion of the weight of driveshafts, springs, shock absorbers, and suspension links, make a ground vehicle's unsprung mass (or unsprung weight).
Sprung mass is the body's mass and other components supported by the suspension, such as the car's body. The vehicle will produce undesired vibration, bump effects, and vehicle lift when traveling at high speeds if the sprung mass is kept to a minimum. Vehicle handling and ride comfort are negatively impacted by unsprung weight. As a result, the suspension system is built to preserve the least amount of unsprung weight. Hence the vehicle ride will be comfortable if the unsprung mass is kept minimum.
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