Question

after pups leave the den but before they are old enough to hunt, they get food through-
all adults of the pack regurgitating food.
the alpha female carrying back part of the kill.
hunting small prey near the rendezvous site.
stealing food from scavengers such as coyotes.

Explanation:

When wolf pups leave the den but are not yet old enough to hunt, all adults in the pack regurgitate food for them. This is a common social behavior in wolf packs to ensure the survival and growth of the young. The alpha female does not solely carry back food, and the pups are not yet capable of hunting small prey or stealing from scavengers.

Answer:

all adults of the pack regurgitating food.