Having a hard time understanding these concepts, please include an explanation as I am really trying to learn how to do the questions. Thank you!

QUESTION 8 Path A-B-M-P is the one and only critical path of a project. Which of the following statements do we know for certain to be TRUE of this path? (Assume that activity durations are measured in full days - no half days) a. Reducing the duration of an activity on this path by one day will reduce the duration of the project by one day. b. None of these answers will always be true OC. Reducing the duration of an activity on this path by four days will reduce the duration of the project by four days. Od. All of the these answers will always be true For some but not all of the activities on this path, reducing the duration of the activity by a day will reduce the duration of the project by a day (i.e., for some of the activities on this path, reducing them by a day won't reduce the project by a day.) QUESTION 9 Consider the following project, for which activities is it possible that the slack can be greater than zero? Activity Immediate Predecessors None B C B D A F C.D F E O a. It is possible for any or all activities in this project to have slack O b. Only activities A or F could have slack, but they could not both have slack O c. It is possible for either both of activities B and C to have slack. OR for activity D to have slack od. Only activities B or C could have slack, but they could not both have slack O e. Only activities B or D could have slack, but they could not both have slack. QUESTION 6 Consider a project whose activities are listed in the table below. Activity E will have slack time as long as... Activity Immediate Predecessors None None A B , C D c F D G E a. Duration of E + Duration of G Duration of D + Duration of F c. Duration of E = Duration of D QUESTION 7 Consider a project whose activities are listed in the table below In order to ensure that the project is completed on time, Activity C must start, at the latest, by time: Activity Duration Immediate Predecessors None None B 10 2 2 e D 2 3 E D F 4 . F G 4 O a. 1 Ob. 2 C3 O d. 4 Consider a project whose activities are listed in the table below. What is the critical path of the project? Activity Duration (days) Immediate Predecessors None None 5 A 6 B 4 A B 3 2 4 5 E B F C G DE O a. ACF Ob. BDG C. BEG O d. There are multiple critical paths. QUESTION 5 Consider a project whose activities are listed in the table below. What is the expected duration of the project? Activity Immediate Predecessors None Duration (days) 6 A B 5 4 A B.C 2. D E F. D 3 E 2. D 5 0 a. 17 days b. 18 days c. 19 days d. 20 days O e. 21 days