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 speed for the dance step depicted by CD is

• A. \[1\text{ }m\text{ }{{s}^{-1}}\]                  
• B. \[1.33\text{ }m{{\text{ }}^{s-1}}\]             
• C. \[\text{2}\text{.75 m }{{\text{s}}^{\text{-1}}}\]    
• D. \[\text{0}\text{.89 m }{{\text{s}}^{\text{-1}}}\]