It is important to provide an environment ________ people are encouraged to make suggestions at

all levels of the company.

这个是填 in which 还是 for which, 帮忙解释下, 谢谢大家呢~

for which吧
suggest for

it is important to provide an environment (in which) people are encouraged to make suggestions at all levels of he company. 为什么要用in，因为英文中描述人处在某种环境中都用in，于此类似的还有 he lives in china. 满意请采纳

定语从句。 先行词是environment, 与这个先行词搭配的介词应该是in,所以是in which, 如果有where的话，还可以选择where.