The given figure is a parallelogram. In a parallelogram, the opposite sides are equal and parallel. This means that
FG = ED
GD = FE
Given that GD = x + 4 and FE = 2x + 1, it means that
x + 4 = 2x + 1
2x - x = 4 - 1
x = 3
The correct option is the option 2