An office manager is interviewing a new employee. Which one of the following choices is a question that the interviewer can't ask?

The question regarding whether the candidate can work on Sundays or attends religious services is one that should not be asked during an interview. This is because inquiries about religious beliefs or practices can lead to discrimination claims. Employers must be cautious to avoid questions that may infringe on the candidates' rights to religious freedom and privacy. Furthermore, focusing on work availability can be approached in a way that does not require the candidate to disclose their religious affiliations, allowing for a more inclusive hiring process. Evaluating a candidate's ability to fulfill job requirements should be strictly related to their qualifications and skills rather than their religious practices.

In contrast, questions about certifications, contact information, and references are considered standard inquiries that directly relate to the candidate's qualifications and professional background. They do not pose the same legal or ethical concerns as questions related to religion.