Final answer:
An EVAL must be submitted upon promotion or frocking to pay grade E-7, which would be designated as '3) C3' in the multiple-choice options. EVALs document a service member's performance and are vital for career advancement in the military.
Step-by-step explanation:
An EVAL, or Evaluation Report, must always be submitted upon promotion or frocking to the paygrade of E-7, which corresponds to option '3) C3' in standardized test answer options. In the U.S. Navy, when personnel are promoted or frocked to the rank of Chief Petty Officer (pay grade E-7), an updated EVAL is required to reflect their new status, responsibilities, and performance expectations at that pay grade. Frocking is a term used in the military that refers to the practice of wearing the insignia of a higher rank before officially being promoted to that rank. The EVAL system is designed to provide documentation of a service member's performance and is crucial for career progression within the military.