The correct answer is: X Co or Z Co.

Harry is most likely to receive management training and career planning in a tall organisation where there are a large number of steps on the promotional ladder. X Co is a tall organisation because it has senior management and supervisory management. Y Co is likely to be a flat organisation because it has relatively low overhead management and administration costs. An advantage of tall organisations is that small groups enable team members to participate in decisions therefore Z Co is likely to be a tall organisation. Therefore organisations Xand Z would be most suitable for Harry.