Final answer:
The maximum number of large medals that can be worn in an overlapping manner in one row is three.
Step-by-step explanation:
When large medals are worn in an overlapping manner, the maximum number you are authorized to wear in one row is three (A). The regulation of medal presentation pertains to uniform guidelines in military dress code, which often specify the correct manner in which medals and ribbons are to be displayed on uniforms. The rules may vary by country and branch of service but typically include stipulations on the number of medals per row to ensure a uniform appearance.