What type of medals are typically worn on formal dress uniforms?

The correct answer regarding the type of medals typically worn on formal dress uniforms is full-size medals. In formal dress settings, officers wear full-size medals on their uniforms to signify their achievements and honors in a prominent way. These medals are attached to the uniform in a distinctive manner to ensure they are easily visible and reflect the service member's accomplishments, providing a sense of pride and recognition both for the individual and the Navy.

Mini medals, while sometimes used in less formal situations or for specific ceremonial purposes, are not the standard for formal dress. Ribbons are often worn in other contexts and represent the same honors as the full-size medals, but in formal dress, it is generally the case that full-size medals are preferred for display. Hence, full-size medals are the recognized standard in formal military attire.