According to FCC 47 CFR Section 90.405 - Permissible Communications, a licensed station may transmit:

• A. Any communication related directly to the imminent safety-of-life or property
• B. Communications for testing purposes required for the proper station and system maintenance
• C. Communications directly related and necessary to those activities which make the licensee eligible for the station license held under this part
• D. All of the above

Answer: (D)

The rule allows three kinds of transmissions by a licensed station: communications directly related to imminent safety-of-life or property; communications for testing purposes required for proper station and system maintenance; and communications directly related and necessary to those activities which make the licensee eligible for the station license held under this part. Since all three categories are explicitly permitted, the option that covers all of them is correct. This means a licensed station may send safety messages when needed, perform and report testing/maintenance, and handle licensing-eligibility related communications as part of normal operations.