Which of the following states is NOT part of the Western Region of DECA?

Illinois is not part of the Western Region of DECA, which is why it is the correct choice. DECA regions are based on geographical divisions, and the Western Region primarily includes states such as California, Washington, and New Mexico, among others. Illinois, however, is situated in the Midwest and belongs to a different region altogether. Understanding the regional divisions of DECA is important for organizational purposes, competition participation, and networking among members within the organization. Recognizing these divisions helps in determining which states collaborate together during events and competitions, making it crucial knowledge for anyone involved in DECA activities.