The primary sources for information on the applicant's previous job performance are

Question

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References are the best choice for obtaining information on an applicant's previous job performance as they are typically people who have worked closely with the applicant and can provide insight into their skills, work ethic, and overall performance. Former co-workers and networking may also provide useful information, but they may not have the same level of knowledge as references. A background check can provide information on an applicant's past employment, but it may not necessarily provide insights into their job performance.

The Primary Sources for Information on the Applicant's Previous Job