I think we'd better create a situation ____the kids can apply this idiom correctly to their spoken English
a where b to which c in that d for which
选a
考察【关系副词where引导定语从句】为什么用where这句话意思不是说我认为我们最好创造孩子们能正常说英语口语的环境为什么which不对呢which是关系代词，关系代词在定语从句中要做句子成分(主语或宾语)，而此句的定语从句不缺【主语或宾语】而缺少的是表【地点/环境的状语】,你说是吗？所以，我们选表示地点的关系副词where.