Final answer:
The executive vice president of Delta Tau Delta's identity cannot be determined from the information provided; more context is needed to identify the individual in this leadership role within the fraternity.
Step-by-step explanation:
The student's question about the executive vice resident of Delta Tau Delta cannot be answered accurately with the information provided regarding Xueyu Cheng from Alabama State University, Robert Cunningham from Alma College, and Rosa Lea Danielson from the College of DuPage. These individuals may be associated with Delta Tau Delta or other entities but without specific context or a definitive link, we cannot accurately determine who the executive vice resident of Delta Tau Delta is. The title implies a leadership position within the fraternity organization, which typically involves overseeing various aspects of fraternity operations and working closely with the president and other board members. It would be beneficial to provide additional information or context to accurately identify the individual holding this office.