Answer:
(D) Abby, Ben, and Clara
Explanation:
Given that each of the five citizens will share the cost of the public good equally (that is, $200 each), citizens who derive benefits greater than $200 are likely to vote in favor of an equal share of the cost since this option will result in a net benefit of the public good to them.
For instance, net benefit to Abby = $220 benefit - $200 cost = $20 net benefit.
On the other hand, citizens who derive benefits worth less than $200 are less likely to vote in favor of an equal share since an equal share will result in a net loss to them.
For instance, net loss to Matt = $120 benefit - $200 cost = $80 net loss.
Therefore, Abby ($220), Ben ($210) and Clara ($210) are likely to vote in favor of a proposal for an equal share of the cost, since the benefit they derive is greater than the cost in an equal share $200.