Answer:
4. Authoritarian
Explanation:
Leadership refers to a leader's quality to extract the desired results from subordinates. It refers influencing people in a desired way so as to align them to organizational goals and extract the best performance out of them.
Appropriateness of a leadership style would depend upon what the situation demands. The approach should be flexible.
In the given case, a tour group is lost in a desert. This points towards a state of panic and anxiety among the group. In such a scenario the authoritative or imperative commanding way of leadership would be applicable.
The tour guide should adopt authoritarian style of leadership so as to remove anxiety and panic, command the group towards finding the right way, and to eliminate confusion and chaos.