In a traditional interview, the focus is mainly on assessing technical skills and qualifications of the candidates. However, in a behavioral interview, the emphasis is on evaluating the candidate's behavioral competencies. This means that the interviewer asks questions that require the candidate to provide specific examples of past behaviors and experiences in order to assess their skills, abilities, and fit for the role. Therefore, the correct answer states that behavioral competencies are assessed by asking the right questions, highlighting the key difference between a behavioral interview and a traditional interview.