The advocate must establish the "workability" of her proposal. As the opponent,

you have the strategic option of challenging this workability. Which of the following are
ways you might challenge workability?

(a) Demonstrate that the cost of making the proposal work because it will be slow,
inconvenient, and time consuming would outweigh any benefits gained from it.
(b) Question the solvency of the advocate's proposal by the application of the
principle, "whatever can go wrong will go wrong."
(c) Identify the attitudinal barriers to the advocate's proposal that will cause those
who are supposed to change to resist change.
(d) All of the above

A