Question 969Navigation General

The correct answer is D) a warning of loss of position. GPS receivers are required to provide a warning of loss of position, as this is a critical failure warning that alerts the user that the GPS is no longer providing a reliable position fix. This is a key safety requirement for GPS navigation, as loss of position can lead to navigational errors and potentially dangerous situations. The other answer choices, while potentially useful features, are not mandatory minimum requirements for GPS receivers. Cross-track error alarms and indications of satellite configuration changes can be helpful, but are not as essential as the requirement for a warning of loss of position.