（2016高考训练）阅读下列材料，从每题所给的选项中选出最佳选项。
体裁：说明文 话题：团购 词数：407 时间：6′
Group buying is one of the fastest growing trends in South Africa today.Industry leaders are confident the growth potential remains strong since group buying is locationspecific (区域性的)．Startup costs are low and profit room remains high, so many sites continue to receive invested money despite widespread criticism and Facebook's decision to phase__out__of the deals business due to privacy concerns.
