What protocol uses a single testing event to quickly determine if mitigation for radon is necessary?

The correct answer identifies "time-sensitive testing" as the protocol that employs a single testing event to swiftly assess whether radon mitigation is required. This approach is particularly efficient as it focuses on short-term measurement, allowing for a quick evaluation of radon levels. The main goal is to get timely results that can indicate if further, more comprehensive testing or immediate action is necessary for radon mitigation.

In contrast, long-term testing involves monitoring radon levels over an extended period, usually a minimum of 90 days, which provides a more accurate average level but does not facilitate rapid decision-making around the need for mitigation. Continuous testing, on the other hand, utilizes devices that monitor radon levels in real-time, which can provide comprehensive data but typically requires a more complex setup and ongoing monitoring. Random testing lacks a systematic approach and does not guarantee the timely assessment of radon levels, making it less effective for the immediate determination of mitigation needs.