Final answer:
A retail audit should be used in the Evaluation phase to analyze a retailer's performance. The described survey design is a Cluster survey design because it targets entire departments randomly rather than individuals across the population.
Step-by-step explanation:
In the Evaluation phase, a retail audit, which is a systematic process for analyzing the performance of a retailer, should be used. The reason for this is that during the evaluation phase, one assesses the effectiveness and results of the business strategies that have been implemented. An audit helps in determining what is working well and what might need improvement.
Regarding the manager's survey design for measuring employee satisfaction, it represents a Cluster type of survey design. By selecting entire departments at random and interviewing every employee within these departments, the design is focusing on specific 'clusters' of the population, rather than on individuals scattered across the entire population or selected via another method like stratification or systematic choice.