Final answer:
Zeta Phi Beta Sorority, Inc. held its formal annual meeting jointly with Alpha Phi Alpha Fraternity, Inc. in conjunction with the National Pan-Hellenic Council (NPHC).
Step-by-step explanation:
Zeta Phi Beta Sorority, Inc. held its formal annual meeting jointly with Alpha Phi Alpha Fraternity, Inc. The annual meeting is typically held in conjunction with the National Pan-Hellenic Council (NPHC), which encompasses nine International Greek fraternities and sororities. The NPHC was established to foster collaboration and unity among these organizations.