Researchers in Germany have unearthed 400,000-year-old wooden spears from what it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who systematically hunted big game much earlier than believed.
A.it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who
B.it appears had been an ancient lakeshore hunting ground and stunning evidence that human ancestors
C.appears was an ancient lakeshore hunting ground and is stunning evidence that human ancestors
D.appears to be an ancient lakeshore hunting ground, stunning evidence that human ancestors
E.appears that it is an ancient lakeshore hunting ground, stunning evidence of human ancestors who
這題答案D
看到what我就傻眼了 , 就算帶入the thing which也還是看不懂是什麼意思
請問這邊的what用which代意思有什麼不一樣呢?