Which pin is worn on the left lapel of a jacket?

The National merit pin is specifically designated to be worn on the left lapel of a jacket, symbolizing the recipient's achievement and affiliation with a relevant academic or professional organization, such as BPA (Business Professionals of America). This pin serves as an honor that reflects the individual's hard work, dedication, and success in various competitive areas. It is a visible representation of a significant accomplishment in the educational or professional field, often encouraging others to strive for similar achievements.

In contrast, the other pins mentioned typically denote different achievements or recognitions and may be worn in different locations or contexts. For example, some pins may represent officer status within an organization, outstanding chapter distinctions, or general membership duration, but they are not standardly located on the left lapel in the same manner as the National merit pin.