Many restaurant menus include the origins of adish it is prepared what the main ingredi

问题补充：

Many restaurant menus include the origins of adish, it is prepared, what the main ingredients are, and which farms the ingredients come from.

A. when

B. how

C. what

D. which

答案：

A. when

(答案→)B. how

C. what

D. which

解析：句意：很多饭店的菜单包括一道菜的原料，怎么准备的，主要配料是什么，配料是来自什么农场。所以选B。