after a mild winter with plenty of food, a deer population grew rapidly. what most likely happened to the wolf population in the same ecosystem?

The wolf population in the same ecosystem will also increase

Explanation:

In any ecosystem a species can grow, reproduce and multiply only if they get food to eat and get energy.

With the end of winter and spring setting in all plants will get fresh foliage which provides abundant food to the deer population with herbivores primary consumers. This in turn will increase the deer population which will grow and reproduce and increase their herd.

At the same time, these deers become the food for the wolves which are carnivores secondary consumers. So the wolves feed on the abundant deer population and grow and multiply in numbers