$\backslash$table$[[$Activity$,$Preceding Activity,Duration $($Days$)],[$A$,,6],[$B$,,2],[$C$,$A$,6],[$D$,$A$,8],[$E$,$B$,$D$,9],[$F$,$C$,3],[$G$,$C$,6],[$H$,$E$,$F$,$G$,4]]$

$3\mathrm{.}4$ Some of the projects undertaken within the program One Africa Headquarters $($OAHQ$)$ were not for economic benefit. Discuss FIVE $(5)$ methods the organisation might have used to select these projects.

$(10$ marks$)$