Final answer:
Gloria can demonstrate her competence in apartment management by obtaining the Certified Apartment Manager (CAM) credential, which requires coursework and passing an exam.
Step-by-step explanation:
Gloria, who already has a sales agent license, is interested in obtaining a certification to do apartment management. One type of designation that indicates competency in apartment management is the Certified Apartment Manager (CAM) credential. This designation demonstrates to employers and colleagues that an individual has the necessary skills and knowledge to manage an apartment complex effectively. To earn this certification, individuals usually have to complete specific coursework and pass an exam that assesses their understanding of apartment management fundamentals.