How are midsegments of trapezoids and triangles alike? how are they different?

Similarity 1. 

Midsegments of a triangle and a trapezoid are alike, because their endpoints, are the midpoints of the sides they touch. 

similarity 2.
The length of the midsegment of a trapezoid is (large base+small base)/2

whereas, the length of a midsegment of a triangle is base/2. 

difference 1:

Midsegments of triangles and trapezoids are different, because we can draw 3 of them in triangles, but only one in trapezoids. 

(we can only join the midpoints of the nonparallel sides of a trapezoid to form its only midsegment.)

There are no table and graph present in this problem

The final answer is a