[tex]\begin{gathered} \text{form choice }B \\ d\text{ = }\frac{2}{3}t \\ \text{let's take a point on the graph, that is when t =3, d = 2 lets test it, if we will get d = 2}\ldots. \\ d\text{= }\frac{2}{3}\times3\text{ = 6} \\ That^{\prime}s\text{ the correct equation, no other equation, will give you that answer.} \end{gathered}[/tex]