Answer:
Step-by-step explanation:
given that a line is drawn between the two pupils of the eyes
For any human being we know eyes are fixed at the same height from the floor.
The pupils also will have the same height from the floor.
Hence line joining the two pupils of the eyes of a man will definitely be horizontal
It would be also perpendicular to the vertical line drawn through the midportion of the body if he stands straight.
Thus for a standing man, a line drawn between the two pupils of the eyes defines horizontal line.
If the mean lies in lateral position, then then this line would be a vertical one
