Question $28$

The AOA network for a certain project is given in the graph below with the task durations $($in days$)$ in the table beneath it$.$ The activities d$1$ and $d2$ are dummy activities.

What activities are on the critical path?

$\backslash$table$[[$Activity$,$b$,$c$,$d$,e,$f$,g,$h$],[$Duration$,8,14,9,6,10,8,1]]$