Answer:
B) individual businesses may presume that others will pay for the lighthouse so that they can escape paying for their portion without causing a reduction in the structure's benefit.
Explanation:
Some businesses will try to keep a low profile to avoid paying their share of the lighthouse because they will assume that other businesses will pay their share. Since it is not a mandatory payment or contribution, those who can avoid it, will avoid it. Businesses are like common people, when you are in a group and something needs to be paid for, some members of the group will come up with excuses for not paying their share.