Which of the following is NOT a category in DECA's competitive event structure?

The correct answer is that "Environmental Science" is not a category in DECA's competitive event structure. DECA focuses primarily on preparing emerging leaders and entrepreneurs in marketing, finance, hospitality, and management. The categories include Hospitality, Project Management, and Marketing, each of which encompasses various specific events that align with DECA's mission of developing skills related to these fields.

On the other hand, Environmental Science is not one of the primary focus areas for DECA. While DECA does encourage themes of sustainable business practices and may touch upon environmental issues within events, it does not specifically categorize any events under Environmental Science as it does with the other provided options. This significantly distinguishes DECA's core emphasis from environmental education or competitions focused solely on science-oriented subjects.