The displacement $(x)$ and time $(t)$ graph of a particle moving along a straight line is shown in the figure. The average velocity of the particle in the time of 10 s is

• Correct answer
  A

  $2 \mathrm{~m} \mathrm{~s}^{-1}$
• B

  $4 \mathrm{~m} \mathrm{~s}^{-1}$
• C

  $6 \mathrm{~m} \mathrm{~s}^{-1}$
• D

  $8 \mathrm{~m} \mathrm{~s}^{-1}$

Hence, the correct answer is option: 'A'.