What factors can lead to false readings in radiation detection devices?

False readings in radiation detection devices can occur due to several factors, including electronic malfunctions and environmental interferences. These devices rely on precise measurements and can be affected by issues such as faulty components or disruptions from external sources like electromagnetic fields, temperature variations, or even humidity.

If a device has an electronic malfunction, it may provide inaccurate readings regardless of the actual radiation levels present. Environmental interferences, such as background radiation from natural sources or strong electromagnetic fields from nearby electronic appliances, can also lead to incorrect readings, as the device might misinterpret these influences as additional radiation.

Other options, such as perfect calibration, constant environmental conditions, and modern technology, do not directly lead to false readings. In fact, perfect calibration helps ensure accuracy, constant conditions can reduce variability in readings, and modern technology tends to improve detection capabilities. Therefore, the correct choice emphasizes the vulnerabilities of radiation detection devices to malfunctions and external disturbances, which are crucial to understanding when interpreting measurement data.