First part is...What is critical path?

this is a multi-step problem.

24 27 D3 33 36 36 43 G, 7 36 43 15 24 B, 9 15 24 0 Start 0 0 015 A, 15 0 15 24 28 "E, 4 24 28 43 43 End 43 43 15 25 C, 10 28 36 F, 8 36 40 H4 18 28 28 36 39 43 O Start-A-B-D-G-End Start-A-B-E-F-G-End O Start-A-C-F-H-End O Start-A-B-E-F-H-End Start-A-C-F-G-End The expected project completion time, in weeks, is O 45 O 60 0 36 43 040 Find the maximum number of weeks that activity C can be delayed without delaying the project. Oo O 2 O 3 O 5 O 10 Which of the following actions leads to a two-week reduction in the project duration? O Shorten B by 1 week and D by 1 week O Delay C by 1 week and shorten F by 1 week O Delay A by 1 week and shorten G by 1 week Shorten E by 1 week and G by 1 week O Shorten A by 1 week and H by 1 week The variance of the entire critical path is: O 13.33 O 9.33 O 2.94 O 8.67 0 3.65 The project duration corresponding to 95% (Z=1.65) confidence, in weeks, is: O 49.02 O 57.30 O 47.85 O 65.00 0 58.40