Choosing the cheapest travel plan under given limits is a:

1. A reasoning-gap activity derives new information from given information. 2. It uses inference, deduction, practical reasoning or perception of patterns. 3. Deciding the best, cheapest or quickest course within constraints is its example. 4. An information-gap task only transfers information between people. 5. An opinion-gap task states a personal preference, with no right or wrong outcome. 6. So the plan question is reasoning-gap. **Why the other options fail:** - An information-gap task passes known facts between partners. - An opinion-gap task has no objectively right answer, but a cheapest plan does. - A pattern drill is repetition and not a task type here. _Source: Wikipedia, "Task-based language teaching", section "Types of task" (revision 1375911558)_