Answer:
D. Altitude.
Explanation:
We have been given an image of a parallelogram. We are asked to find the correct term for segment BE.
Upon looking at our given parallelogram, we can see that BE is perpendicular to base AD of our given parallelogram.
We know that the altitude (or height) of a parallelogram is the perpendicular distance from the opposite side to the base of parallelogram, therefore, BE is altitude of our given parallelogram and option D is the correct choice.