How must Jackson ATCT handle arriving aircraft during nonradar procedures in relation to the clearance limit?

In nonradar procedures, it's essential for air traffic control to maintain safe separation and ensure proper sequencing of arriving aircraft. The correct choice emphasizes that during nonradar operations, controllers are typically required to transition arrivals at or below 5,000 feet. This height restriction helps ensure that aircraft are maintaining a safe altitude while navigating towards their airport of arrival.

The rationale for this procedure is rooted in maintaining a safe separation between aircraft, especially when the structure of air traffic control may be less precise due to the lack of radar. By managing arrivals at or below 5,000 feet, the controller can more effectively monitor and control the flow of traffic into the terminal area, ensuring that aircraft remain clear of potential conflicts at higher altitudes during their approach.

The other choices would not adequately ensure safety or compliance with standard operating procedures in nonradar environments. Thus, the requirement to handle transitioning of aircraft at or below 5,000 feet contributes to a fundamental safety protocol within air traffic management.