The following is a letter to the head of the tourism bureau on the island of Tria.
"Erosion of beach sand along the shores of Tria Island is a serious threat to our island and our tourist industry. In order to stop the erosion， we should charge people for using the beaches. Although this solution may annoy a few tourists in the short term， it will raise money for replenishing the sand. Replenishing the sand， as was done to protect buildings on the nearby island of Batia， will help protect buildings along our shores， thereby reducing these buildings' risk of additional damage from severe storms. And since beaches and buildings in the area will be preserved， Tria's tourist industry will improve over the long term."
Write a response in which you discuss what specific evidence is needed to evaluate the argument and explain how the evidence would weaken or strengthen the argument.
中文翻译：
T岛海岸的E沙滩的侵蚀对于我们岛和我们的旅游业是个严重的威胁。为阻止侵蚀，我们应该对使用海滩的人收费。尽管这一解决方案会在短期内触怒少量游客，它将会减少使用海滩的人数并增加补充沙子的资金。象临近的Batia岛一样补充沙子将会有助于对我们沿岸建筑的保护，从而减少这些房屋在大风暴中受损的危险。由于房屋和海滩将会受到保护，所以T岛地区的旅游业将会在长远得到发展。
写一篇回应，讨论还需要何种具体的证据才能更好的评估上面的论证，并解释这个证据是如何强化/削弱这篇文章的论证的。
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