---- some of the suggestions prove of value to you as well?

答案C
从as well的词组组合,排除a和b
may [might] (just) as well…
意为“不妨”、“还是…为好”等,用 might 比用 may 语气更委婉.
如：
I’m ready,so I might as well go now．
我已准备好,因此不妨现在就走.
There’s nothing to do,so I may [might] as well go to bed.
既然没什么事可做,我还是去睡觉为好.
注：might as well 还可用于指过去的情况或用于比较两个令人不愉快的情况：
This holiday isn’t much fun; we might as well be back home.这个假日过得真没意思,我们还不如呆在家里.
本句Might some of the suggestions prove of value to you as well?
有些建议会向你证明还是有些用处的.
供楼主参考