which of the following would help a hiring manager determine whether a recruiting resource is effective

Question

comparing salaries at multiple corporattion
comparing the diversity of internal versus exernal candidates
comparing retention and turnover results from different recruiting sources
creating job listing on multiple social media sites

Answer 1

Comparing retention and turnover results from different recruiting sources would be the most effective way for a hiring manager to determine whether a recruiting resource is effective. This is because it directly assesses the ability of the resource to attract and retain employees over time, which is a key indicator of its effectiveness.