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Which of the following definitions correctly defines the acronym, PERT? O a. Program Explanation and Reduction Technique. b. Process Evaluation and Review Technique. O c. Program Evaluation and Review Technique. o d. Program Evaluation and Reduction Technique. Which of the following correctly describes the focus of the Critical Path Method (CPM)? O a. To estimate the probability of completing a project by a given deadline when the time required to perform the activity is essentially a random variable. ob. To determine when a project should be completed and to schedule when each activity in the project must begin in order to keep the project on schedule. oc. To structure the activities of a project in order to eliminate or reduce critical dependencies among the activities. od. To order activities in a project in terms of their completion time to facilitate scheduling of the activities. Critical activities are distinguished by the presence of a. idle resources. O b. slack. C. wasted time. O d. zero slack