参考答案

正确答案：D
解析：What tax is collected from even the poorest citizen?
四个选项都是税收种类，由此可以猜测，本题的内容可能涉及某项具体的税收名称。
文中关键句为“there are usually state and country taxes，the sales tax，that is added to the cost of an item at the retail level...including the poorest citizens”．商品税加收在每项零售商品上，所以即使是最贫困的公民也会因为日常购物而支付这笔税收。故正确答案为D)。