【正确答案】 C

【答案解析】The quickest way to solve this problem is to note that, if you draw a line from C perpendicular to AD, you create a rectangle whose area is 16×8, or 128 square units. Because the trapezoid is slightly larger than the rectangle, the area must be slightly greater than 128. Only answer choice C works. You can also calculate the area of the small triangle you created when you drew the perpendicular line: