Answer
The electron moves to the right.
Work Step by Step
When an electron is released in an electric field, the electron moves toward positions of higher potential because the electron has a negative charge.
We can find an expression for the electric force:
$F = q~E$
$F = q~(-\frac{dV}{dx})$
At the point x = 2 m, $\frac{dV}{dx}$ is positive. Then $(-\frac{dV}{dx})$ is negative.Then the force $F$ is positive since the charge $q$ is negative. Therefore, the force on the electron is directed in the positive direction.
The electron moves to the right.
