Argon in the amount of 1.5 kg fills a 0.04 m3 piston-cylinder device at 550 kPa. The
piston is now moved by changing the weights until the volume is twice its original size.
During this process, argon’s temperature is maintained constant

Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan