Consider the project given below consisting of $12$ different

activities. Draw the network on node diagram of this

project and use it to answer the four questions below.

$1.$ which activities are directly dependent on activity A$4?$

$2.$ which activities are directly or indirectly dependent on activity A$4?$

$3.$ which activities are directly dependent on activity A$5?$

$4.$ which activities are directly or indirectly dependent on activity A$6?$

$5.$ what is the least tme that the projects takes to complete? please answer in "number of days". for instance, if the project takes $10$ days to complete, please enter $10.$