a$.$ What is the critical path?

$[$ Select$]$

b$.$ What is the project length:

c$.$ Which activity should the bike shop crash first $,$ and how much would it add to the project cost?

d$.$ Which activity should be crashed next to reduce an additional hour off the project and what would be the total cost? $($reducing the project by $2$ hours$)$

e$.$ Which activity$($s$)$ should be crashed next if you needed to reduce the project by another $2$ hours $($total $4$ hours$)$ and what would be the total cost for the $4$ hour reduction