Why is it to make the front rectangle of the table go outside the canvas page

To add depth to picture, and its easier to fix if you mess up.

Explanation:

that's what I had answered and got a 100

the correct answer is the first option. the principle of design that suggests a structural relationship between different elements within a work of art is unity.  unity is the principle of the quality of cohesiveness that is expressed with compositional similarity, oneness and cohesion.