What is true regarding the teardrop course reversal for the LOC RWY 18 approach to Lincoln?

Choosing the teardrop course reversal for the LOC RWY 18 approach to Lincoln is correct because, in certain procedures, specifically during a localizer approach that requires a course reversal, only a teardrop entry is explicitly permitted. The FAA often specifies that a teardrop maneuver can provide a more efficient means of transitioning from the holding pattern or the approach course, especially in situations where space and air traffic might allow for such a pattern.

In this context, the other options are not applicable. While other approaches may offer the flexibility of procedure turns, this specific approach focuses solely on the teardrop maneuver when a course reversal is necessary. Thus, this choice aligns with the procedural guidelines for that particular approach, emphasizing that pilots must adhere strictly to the prescribed maneuver for safe navigation and compliance with air traffic control instructions.