Question

arctic foxes dig holes in the ground to make their homes. their homes are called dens. in spring and summer, a mother fox has many pups. the pups and the mother fox live in the den. how do arctic foxes make their dens? they put snow in a big pile. they find sticks to build a nest. they dig holes in the ground.

Explanation:

The text clearly states "Arctic foxes dig holes in the ground to make their homes. Their homes are called dens." So we just need to match this statement with the options.

Answer:

They dig holes in the ground.