experimental model and retated data are listed in the foliowing table.

$\backslash$table$[[$Activisy$,\backslash$table$[[$Normal$],[$Time $($wetks$)]],\backslash$table$[[$Crash$],[$Time $($weeks$)]],\backslash$table$[[$Normal Cost$],[$Cost$],[$with$],[$Crashing imenediate Predecessoris$)]],,],[$A$,3,2,$$$1,400,$$$2,000,-],[$B$,2,1,$$$2,100,$$$2,000,-],[$C$,1,1,$$$350,$$$350,-],[$D$,7,3,$$$1,300,$$$1,590,$A$],[$E$,6,3,$$$560,$$$1,100,$B$],[$F$,2,1,$$$4,000,$$$5,000,$C$],[$G$,4,2,$$$1,000,$$$2,300,$D$.$E$]]$

a$)$ Based on the given information regarding the activibes for the proped the propoct compiebon date : wooks