What

[xyin]

(GMAT PREP Verbal)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
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.


(GMAT PREP Verbal) The electronics company has unveiled what it claims to be the world’s smallest network digital camcorder, the length of which is that of a handheld computer, and it weighs less than 11 ounces.
A. to be the world’s smallest network digital camcorder, the length of which is that of a handheld computer, and it weighs
B. to be the smallest network digital camcorder in the world, which is as long as a handheld computer, weighing
C. is the smallest network digital camcorder in the world, which is as long as a handheld computer, and it weighs
D. is the world’s smallest network digital camcorder, which is as long as a handheld computer and weighs
E. is the world’s smallest network digital camcorder, the length of which is that of a handheld computer, weighing

Why we can use "What it claims" but cannot use "what it appears?" Can anyone explain the differences of "What" in these two sentences?

[jnelson0612]

Please repost in the GMAT Prep verbal forum.