Which of the following, if true, strengthens Weinstock's argument?

A) Chin has trained many of the current managers in the Legal Division.
B) Even if the Legal Division managers supervised an ideal number of employees, lawyers would still need to explain their advice in language that nonlawyers can understand.
C) An approach similar to the one Chin recommends was implemented in another division in the organization.
D) None of the Legal Division managers' current supervisory tasks could be delegated to someone outside the Legal Division.
E) Changes in the legal environment have a profound effect on the advice that Legal Division managers provide.

Answer: D
Explanation: D) Are the Legal Division managers fully loaded with work as it is? Even if they are, that workload could be reduced if some of their duties were assigned to someone else. That would make it easier for them to supervise more employees. But if Choice D is true, then their duties cannot be assigned to someone else. Choice D takes away a possible way to make the managers supervise more people, and so Choice D strengthens Weinstock's argument. Choice A weakens Weinstock's argument by making Chin sound more experienced. Choice C is too vague to make a difference. The other division could be in a different situation, and we don't know what happened after the approach was followed. Choices B and E refer to aspects of the job that aren't related to span of control. Those considerations are in place no matter what, and so they don't make a difference to the question at hand.