Answer:
The Air Force did not allow retired dogs to stay with their handlers in the ‘80s.
Explanation:
The issue of canine/K-9 dogs being adopted by their handlers had only been recently changed when President Bill Clinton signed "Robby's Law" in 2000. Before that, all retired K-9 dogs were euthanized, with no option of it being adopted by anyone, even their own handlers.
In the given passage, Jim Skinner knew that his canine dog was getting old and would probably be given the 'go' after him. The statement <em>"he knew that it wasn't going to be passed on to another handler, most likely"</em> suggests that there is no future for the dog and most likely won't be given another handler. So, Skinner decided to spend or extend his service several times just to spend time with the dog and also, indirectly prolonging or sustaining the old dog's life.
Thus, the correct answer is that the Air Force did not allow their retired canine dogs to be adopted or to stay with their handlers in the 1980s.