Final answer:
The average count of a trapezoid around the perimeter is 4.
Step-by-step explanation:
A trapezoid is a quadrilateral with one pair of parallel sides. To find the average count of a trapezoid around the perimeter, we need to calculate the average of the number of sides a trapezoid has.
A trapezoid has 4 sides, so the average is (4+4)/2 = 8/2 = 4.
Therefore, the average count of a trapezoid around the perimeter is 4 (option d).