Answer ANY THREE $(3)$ questions in this section.

Important note $-$ Questions that require diagrams can be answered on a Word document and submitted as a file upload on MANCOSA Connect. Ensure that your answers are clearly labelled.

QUESTION $2$

$(20$ Marks$)$

Piet Morroy is the project manager for the Gautrain project, a high$-$speed railway system implemented in Gauteng, South Africa. It represents a significant transportation infrastructure initiative aimed at improving connectivity, reducing congestion, and enhancing mobility within the Gauteng province, which includes Johannesburg, Pretoria and surrounding areas. The following table is provided illustrating the activities of the project.

$\backslash$table$[[$Activity$,$Preceding,$\backslash$table$[[$Optimistic$],[$Time$]],\backslash$table$[[$Probable$],[$Time$]],\backslash$table$[[$Pessimistic$],[$Time$]],\backslash$table$[[$Expected$],[$Time $($days$)]]],[$A$,-,7,10,19,11],[$B$,$A$,2,2,8,3],[$C$,$A$,8,12,16,12],[$D$,$A$,3,5,10,5\mathrm{.}5],[$E$,$B$,4,6,8,6],[$F$,$B$,6,8,10,8],[$G$,$C$,$ F$,2,3,4,3],[$H$,$D$,2,2,8,3],[$I$,$H$,6,8,16,9],[$J$,$G$,$ I,$4,6,14,7],[$K$,$E$,$ J$,2,5,8,5]]$

Using the provided information above, determine the following:

The activities that cannot be delayed and the expected time for completing the project.