Final answer:
The exception to the Freedom of Information Act where federal records centers will accept records with less than 3 years of retention is medical records for government employees.
Step-by-step explanation:
The exception to the Freedom of Information Act where federal records centers will accept records with less than 3 years of retention is medical records for government employees. Medical records for government employees are exempt from public access due to privacy concerns and the need to protect personal information. This exception ensures that sensitive medical information remains confidential.