Which of the following is true about the Mona Lisa?
A. She has an ambiguous expression
B. It is da Vinci‘s most famous painting
C. Her gaze is shifted slightly to look straight with you
D. All of the above

"D"

All of the above

Explanation:

She has an ambiguous expression, it is da Vinci's most famous painting, and that her gaze is shifted slightly to look straight at the viewer

The answer should be D.

Explanation:

Have you ever seen a Mona Lisa Shifted Eyes looking slightly at you and to have an ambiguous expression. Da Vinci was the most famous artist, so that's how it's well known.  

Your Welcome.

coordinates of r(b,c)

slope of nm is 0.

step-by-step explanation:

the midpoint of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

the midpoint of the line segment nk is given by

∴r(b,c)

the slope of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

slope of rs is

hence

coordinates of r(b,c)

and slope of nm is 0.