$6.$ with reactive crashing $($compared to pro$-$active crashing$)$

a$.$ the tradeoff between cost and time changes, and the same time savings can be achieved at lower cost

b$.$ the project manager needs to develop decison$-$points where the contigency crashng plan will be implemented based on project status.

c$.$ the project status manager needs the ability to rellocated resources on short notices

d$.$ all of the above

$8.$ We assumed in Q$2$ that duration of B might be $2$ or $8$ with equal likelihood. If duration of B is $2$ with $20\%$ chance and $8$ with $80\%$ chance, then the value of flexibility

a$.$ increases

b$.$ decreases

c$.$ remain the same

$9.$ We assumed in Q$2$ that duration of B might be $2$ or $8$ with equal likelihood. If duration of B is $2$ with $80\%$ chance and $8$ with $20\%$ chance, then the value of flexibility

a$.$ increases

b$.$ decreases

c$.$ remain the same