What are the limitations of a journeyman gas license?

The correct choice indicates that a journeyman gas license holder is qualified to work under the supervision of a Master Installer. This reflects the structure of apprenticeship programs and licensing in trades like plumbing and gas fitting, where ensuring safety and compliance with regulations is paramount.

In this context, a journeyman is someone who has completed the required training and apprenticeship but is still not fully licensed to work independently. The supervision of a Master Installer ensures that the journeyman is guided by someone with more experience and knowledge, thereby maintaining the safety and quality of the work performed.

The other potential options do not accurately reflect the scope and limitations of a journeyman gas license. For instance, stating that a journeyman can only work on residential buildings does not account for the fact that, depending on the jurisdiction and experience, they may also work on certain commercial projects under supervision. The option implying that they can perform work without supervision misunderstand the developmental role of a journeyman's position. Lastly, claiming limitations exclusively to gas appliances overlooks the broader spectrum of work that a journeyman may be involved in, which could include installations and services beyond that scope, but only under the supervision of qualified professionals.