Answer:
its A
Step-by-step explanation:
If its one of these signs(<>) then its open and if its one of the signs with the line under it then its closed
This diagram shows how 2/7 = 8/28 by showing that you can color in more squares or duplicate that amount of squares 4 times in order to get 8/28. (Since 2/7 x 4/4 = 8/28.)