问题：
Both the technology Wal-Mart adopted and its fruga
答案：
keeping retail prices解析:第2个小标题Wal-Mart Strategy部分的第5段第l句:The central goal of Wal-Mart is to keep re- tail Prices low—and the company has been very successful at this.空白处需要名词性成分。原文中是直接对central goal进行表述,用的是动词不定式短语,但是本题用的是介词of;原文中的low和本题中的as low as possible表意相似,故答案为keeping retail prices。