Name two of the elements of visual art and briefly explain them give examples of how each of those elements might be used in a particular piece to achieve a goal by artist

Value and texture

Explanation:

The artist can use this to show a depth throughout the art piece. They can show an illusion and make certain things pop out at you. They can use it to emphasize a main point that they are trying to get across through an art piece. The artist creating the art work can use texture to help you with having a more visual representation to help you visualize or imagine what the art piece would feel like if you were to be inside of it.

I hope this helped you

i believe their role is to instruct certain sections on when they are to join and when they are to stop