Where is a pack horse likely to work?\nOptions:\n- women's literature\n- race track\n- belmont park\n- dude ranch\n- a movie
Step-by-step reasoning process below:
dude ranch
Pack horses are used to carry loads.

Racehorses are not pack horses.

Dude ranch is a cattle ranch converted to a holiday centre for tourist.

.

The answer: dude ranch