单选题 In a world in which hunger remains prevalent, machines and organizations hold the key to producing more food and distributing it equitably.

【正确答案】 A

【答案解析】rampant：繁茂的；disorderly：无秩序的；trendy：流行的；conventional：俗套的。题中prevalent意为“盛行的”，可知A项符合题目要求。