单选题 Since the early nineties, the trend in most business had been toward on-demand, always-available products and services that suit the customer's ______ rather than the company's.
【正确答案】 B
【答案解析】解析：在给出的选项中：benefit意为“利益”；availability意为“有效，可利用性，有益，可得到的东西”；suitability意为“合适，相配，适当”；convenience意为“方便”。根据句意和各个选项的意思可知，正确答案是B。