The give graph check for all option then:
(a) for 2s to 5s graph is :
at 5s graph is more then 25 and at 4s then its less then 5 so first option is describe.
(b)
the graph is 7 to 12 s then speed is decribe because
[tex]\text{speed}=\frac{\text{ distance}}{\text{ time}}[/tex]
Here distance and time both decribe
(c)
The point 8 to 10s cart is not moved the start point
So the option "C" is not describe
