Which of the following is often considered a short-term radon measurement method?

Continuous monitoring is considered a short-term radon measurement method because it provides real-time data on radon levels over a brief period, typically ranging from a few days to a few weeks. This method allows for the identification of fluctuations in radon concentrations, which can be influenced by factors such as weather changes and building occupancy. Continuous monitoring devices can track these variations continuously, giving a more comprehensive view of short-term radon levels compared to methods that don't capture data in real time.

While grab sampling can also be a method for measuring radon, it is generally less representative of the conditions over a short time frame, as it captures radon levels at a single point in time and may miss variations. Smart technology sensors might offer advanced capabilities, but they generally fall under continuous or long-term monitoring rather than being specifically categorized as short-term methods. Radon-specific test strips are often used for screening but are typically associated with longer measurement durations than those recognized as short-term.