There's an old saying, "The job is not finished until the paperwork is done." From an activity network standpoint, this does not necessarily mean that the paperwork can't begin until the last non-paperwork activity is completed. It might be possible to work on some paperwork as early activities are completed. In order to depict this in an activity network:
a. Laddering could be used to redraw the network.
b. Shortcuts can be added to the network.
c. Subroutines could be added.
d. Hammock activities could be drawn.

a. Laddering could be used to redraw the network.

Explanation:

Since it might be possible to work on some paperwork as early activities are completed. In order to depict this in an activity network, laddering could be used to redraw the network.

The ladder network suggests that different levels are attained in the design process.

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