Final answer:
A reasonable accommodation is deemed reasonable when it meets certain criteria, including not causing undue hardship to the employer, being requested by the employee, and being mandated by law. Convenience for the employer is not a determining factor in whether an accommodation is reasonable or not.
Step-by-step explanation:
The reasonable accommodation is deemed reasonable when it meets certain criteria. First, it should not cause undue hardship to the employer. Second, it should be requested by the employee. Third, it should be mandated by law. Convenience for the employer is not a determining factor in whether an accommodation is reasonable or not. The Americans with Disabilities Act (ADA) of 1990 requires employers to make reasonable accommodations for disabled persons.