$2.$ The following project management problem has five parts, and each part is of $1$ points $(5$ points$)$

a$.$ Make a network diagram $(2$ points$)$

b$.$ Identify critical path $(1$ point$)$

c$.$ Can the project be completed in $49$ weeks give your answer in yes or no$?(1$ point$)$

d$.$ Which activity has the highest slack time? $(1$ point$)$