【正确答案】 A

【答案解析】[解析] 本题根据第一段的第二句“Many complained about the restrictions when they arrived，but I didn't，because I seriously hated watching shoppers smoking through the tomatoes and lettuce in the vegetable section of the store．”可知，以前没有法律禁止在公共场所吸烟，当各种限制出现后，有些人对此颇有微词，可见they此处所指为restrictions。因此A项为正确答案。