Watchmen, a security guard staffing company, is intending to create a formal selection system that varies the importance placed on each aspect of their selection system. They ask current clients to weight how important they think each aspect of the seleciton system is for job importance, and require that the total of the weights must sum to 100%. What kind of approach to selection tool weighting is this? Group of answer choices Hypothesis weighting Rational weighting Statistical weighting Optimal weighting