Final answer:
Justin used the optimizing model of decision making, as he aimed to find the best candidates who provide quality care and fit well with the team through a thorough review and interview process.
Step-by-step explanation:
Justin, the nurse manager in a rehabilitation unit who is experiencing a high turnover rate among rehab assistants, opted to review each application thoroughly and interview candidates carefully. His decision-making process reflects the characteristics of the optimizing model of decision making. This model involves a complex process that aims to produce the most effective and efficient outcome by thoroughly evaluating all available information and options. Justin's approach of seeking to hire staff who can best provide high-quality care and who will fit well with the team indicates a careful analysis of all the factors involved and a desire to optimize the results in finding the right candidates, rather than just filling positions quickly.