Which statement is true regarding the shipping of nuclear gauges?

The correct statement regarding the shipping of nuclear gauges is that they can only be shipped on cargo aircraft. This is due to the stringent regulations governing the transport of radioactive materials to ensure public safety and minimize exposure. Nuclear gauges contain radioactive isotopes, which are classified as hazardous materials. As such, their transport must comply with both national and international safety regulations, including the IATA (International Air Transport Association) guidelines for air transport of dangerous goods.

Using cargo aircraft specifically allows for the necessary precautions to be upheld, ensuring that the radioactive materials are handled appropriately and that safety measures are in place during transit. This option reflects the importance of safeguarding public health and safety during the shipping process.