Please answer the following four questions with the information presented on the table $($revise the image$)$:

$1.$ Develop the network diagram. Remember to use terminators.

$2.$ Calculate the Early Start $($ES$),$ Early Finish $($EF$),$ Late Start $($LS$)$ & Late Finish $($LF$)$ of each activity.

$3.$ Calculate the total float for the project. $($Formula: Late Start$-$ Early Start$)$

$4.$ Write down the critical path and its duration.