To find the area of the polygon, we first need to calculate the area of the rectangle and the two triangles.
Area of rectangle = length x width = 4 x 2 = 8 square units
Area of one triangle = 0.5 x base x height = 0.5 x 3 x 3 = 4.5 square units (since the base is divided in half by the rectangle, the area of each triangle is half of what it would normally be)
Total area of both triangles = 4.5 + 4.5 = 9 square units
Total area of the polygon = area of rectangle + total area of both triangles = 8 + 9 = 17 square units
Therefore, the correct answer is not listed in the options provided.