Final answer:
Employers with 100 or more employees must submit an EEO-1 report.
Step-by-step explanation:
The type of organization that must submit an EEO-1 report is option A: employers with 100 or more employees. This report is required by the U.S. Equal Employment Opportunity Commission (EEOC) to track workforce composition and diversity. Employers with fewer than 100 employees are not required to submit this report.