Final answer:
Under Title VII of the Civil Rights Act, employers cannot ask job interview questions that can result in discrimination, such as queries about a candidate's nationality.
Step-by-step explanation:
Under Title VII of the Civil Rights Act of 1964, it is illegal for employers to ask job applicants questions that can lead to discrimination on the basis of race, color, religion, sex, or national origin. Specifically, questions about a candidate's marital status, nationality, disability status, or arrest record are deemed inappropriate and can be a basis for discrimination. Among the provided options, asking about a candidate's nationality ("What is your nationality?") is not permissible during a job interview according to Title VII. Employers should focus on the applicant's qualifications for the job without delving into personal characteristics that are legally protected.