Direction: Read the passage carefully and answer the following questions. A dancer is demonstrating dance steps along a straight line. The position-time graph of the dancer is given here. The average velocity of the dancer during time interval between t = 2 s to t = 9 s is

• A. \[1\text{ }m\text{ }{{s}^{-1}}\]
• B. \[-\text{ }0.57\text{ }m\text{ }{{s}^{-1}}\]
• C. \[2.75\text{ }m\text{ }{{s}^{-1}}\]
• D. \[-\text{ }0.29\text{ }m\text{ }{{s}^{-1}}\]