Read this line from the text:
later the dog will learn more difficult tasks: to pick up a scent from an article of clothing or pick out a particular human scent in a crowd of people, for example. which of the following is likely a strategy used to teach sar dogs these more difficult tasks?
a. playing focused games, such as finding a toy containing a treat
b. learning games, few of which relate to search and rescue
c. repeating drills like sitting, heeling, and staying
d. watching other dogs, mainly to give the trainee some rest