The mayor of Coast Town has determined that the best way to pay for th

The mayor of Coast Town has determined that the best way to pay for the construction of a new library is to charge all residents and non-residents a fee for visiting Coast Town's well-regarded beach. The mayor reasons that at current levels of visitation, the revenue generated from the beach visitation fee will pay for the new library within three years.

Which of the following pieces of information would be most useful in evaluating the mayor’s conclusion?

A) The manner in which other towns in the state have funded the construction of their libraries.
B) Whether visitors to Coast Town's beach will reduce the frequency of their visits in response to the fee.
C) How many people visited Coast Town's beach last year.
D) How many other beaches lie within convenient driving distance from Coast Town.
E) The average level of household income of residents in Coast Town.
Options A,C,E are out of scope.
B/w option B,D i will prefer B because if the number or frequencies of people visiting beach reduces then the plan fails. D is the second best option because if there were more beaches in near by proximity of coast town then the people will prefer going there instead of paying fees. But choosing this option includes assumption that nearby beaches do not charge fees so ultimately anyhow the best option is B.