Which of the following shows the correct usage of a deadband option in a query?

The correct choice that demonstrates the appropriate usage of a deadband option in a query is associated with the setting of a deadband value that effectively filters out noise or insignificant changes in data readings. In this context, a deadband is a defined range within which any changes in value are ignored, allowing for the extraction of meaningful trends without being affected by small fluctuations that do not represent significant shifts.

The value of 5 in the chosen answer indicates that any variation less than 5 units will not trigger an event or be counted in the output of the query, which is a practical size for a deadband depending on the nature of the data being processed. This allows analysts to focus on more significant changes in the dataset, thus providing clearer and more relevant information.

In contrast, some other options present too high or too low of a deadband, which might not be suitable for most applications. A deadband value of 10 or above could lead to ignoring potentially relevant data changes, while a deadband of 2 might be insufficient to filter out noise effectively, depending on the variability of the data being examined. Therefore, the value of 5 is a balanced choice that serves the intended purpose of deadband application effectively.