Which sentence contains an example of contested comma usage?

Who were the imagists? what did they believe? how is their view on the world seen in their poems?

How is time represented in “persistence of memory” by salvador dali? what effect does dali achieve? can writers use similar techniques in written works? how would writers achieve this with words?

7. a line of symmetry divides a design so that every point on one side of the line coincides a point on the other side of it determine how many lines of symmetry each figure below has then draw all the lines of symmetry. show your work