The velocity – displacement graph describing the motion of a bicycle is shown in the   The acceleration –displacement graph of the motion of a bicycle is best described by.

Slope of velocity – time graph is acceleration.             Similarly,  vdvdx= aWhere dvdx=0 ⇒a=0. So 2nd or 4th option is correctdvdx  is constant & V is increasing linearly .  ‘a’ also increases linearly  . So only 2nd option is correct.