请问一道LSAT题的意思

van16

The problem that environmental economics aims to remedy is the following: people making economic decisions cannot readily compare environmental factors, such as clean air and the survival of endangered species, with other costs and benefits. As environmental economists recognize, solving this problem requires assigning monetary values result from people comparing costs and benefits in order to arrive at economic decisions. Thus, environmental economics is stymied by what motivates it.
其中，红色部分是什么意思？result from修饰什么？

谢谢

[此贴子已经被作者于2003-9-16 14:23:20编辑过]

saic_zzh

环境经济雪茄认识到，要解决这些问题就必须赋予这些环境因素于价值，而这些价值对于人们来说是为了作出一个经济学上的决定而将成本与收益进行比较的。