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(a) a lift truck is kept upright (b) a lift truck is kept safe and dry (c) a lift truck is maintained (d) a lift truck is sold
Correct answer is <<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>a lift truck is kept safe and dry
It's "Transverse and longitudinal stability" or "Stability Triangle" which are - 3 Point Suspension (Defined as a Triangle) & 4 Point Suspension (Defined as a Square). It is a form of calculations "Transverse & Longitudinal Stability" to get the value of Trailer Max. Tipping Angle.
(a) a lift truck is kept upright