Answer:
Last option
Explanation
From looking at the graph, you can see that the graph for New Leash looks similar to No Ruff, only shifted to the right. This means that New Leash's average is probably bigger.
(Side: A and C say the same thing,
i-ready is designed so that your teacher knows where you are as a student, so only use outside help when allowed and/or if you can not understand the material)