What problems can result from activity re$-$allocation, for example, re$-$assigning resources from non$-$critical activities to critical activities to crash the project schedule?

Question $7$Select more than one:

a$.$

It will become too difficult to track re$-$allocated resources.

b$.$

The schedule of critical activities could increase.

c$.$

Non$-$critical activities could fall behind schedule and become critical.

d$.$

Labour costs may rise if productivity rates on the critical activities worsen.