Final answer:
The question seems to refer to the artistic competition category once featured in the Olympic Games. The lone country that did not medal in these competitions during their final Olympic appearance is not specified in historical records. Art competitions were held for several Olympic cycles but were discontinued after the 1948 Olympics.
Step-by-step explanation:
The student's question appears to pertain to the history of the Olympic Games. Specifically, it seems to refer to a historical fact about an artist's sports competition that was held only in two Olympic Games. This competition is a lesser-known part of Olympic history, not directly tied to athletic events, and it did take place starting in 1912 and ending in 1948. There was indeed a time when the arts were included in the Olympics as a competition category; however, the details provided in the student's question do not match historical records accurately.
The country that sent the lone participant who did not medal in the final appearance of these art competitions remains unidentified in the question, as this is not a widely documented aspect of the Olympic Games. The art competitions were discontinued after the 1948 London Games and were separate from the athletic competitions that are the primary focus of the Olympics.
Therefore, it's unclear which specific country the student is asking about without further context or details about the event. However, during the 1948 Games, countries from across the world participated, but not all of those participants won medals in the competition.