________ the help of the dog, people lost in snow found their way home.

A) In                 B) Under            C) With                  D) By

________ the help of the dog, people lost in snow found their way home.

1. A.
   In
2. B.
   Under
3. C.
   With
4. D.
   By

________ the help of the dog, people lost in snow found their way home.