These letters .见下面补充

问题描述:

These letters .见下面补充
These letters certainly ___his mysterious disappearance almost ten years ago.填shed light on /displayed/ indicated 哪个好,为什么?

应该是shed light on - - - - 往往强调让人们去思考或者猜测某件事的发生.

而indicate / display强调直观地知道某件事的发生.