Explanation: Commercial radio operator licenses issued by the FCC require applicants to demonstrate proficiency in English communication. Specifically, FCC Part 13, which governs commercial radio operators, mandates that an applicant "must be able to send and receive correctly by telephone spoken messages in English." This ensures effective communication in critical operational scenarios. The other options are incorrect: * **B) Handicapped persons:** The FCC does not disqualify individuals based on disabilities, provided they can perform the essential duties required for the specific license. * **C) Foreign maritime radio operators:** Foreign nationals can be eligible for FCC commercial licenses if they meet all other requirements, including legal residency and passing exams; IMO certification is not an FCC prerequisite for *issuance* of their commercial licenses. * **D) U.S. Military radio operators:** Active-duty military personnel are fully eligible to obtain FCC commercial radio operator licenses, with their military service often providing valuable experience.