Answer:
While changes to vessel lanes and speeds may have been beneficial to right whales, additional actions are needed to prevent population declines.
Step-by-step explanation:
As you can see from the graph, both those things were beneficial, but around 2009 you can see that the population began going down again. This means that the effects were obviously good, but that more actions should be taken in order to ensure that the right whales thrive even more since for the first time in 20 years they began going back down.