I'm between C and E, Can't eliminate E, but D is not parallel with the first part of sentence.

hemant_rajput wrote:The underlying physical principles that control the midair gyrations of divers and gymnasts are the same as the body orientation controlling astronauts in a weightless environment

(A) as the body orientation controlling

(B) as the body orientation which controls

(C) as those controlling the body orientation of

(D) ones to control the body orientation of

(E) ones used in controlling the body orientation of

[spoiler]
What actually is the issue with D and E. I've eliminated because I can see C is the correct choice and both d and e sounds weird to me, but I don't have any proper reason for their elimination.[/spoiler]

1000 SC has to be taken with a pinch of salt!All said and done, lets see what we have here:

"underlying physical principles that control the midair gyrations of divers and gymnasts" "are the same" "as..."

So 3/2 split seen here

"as" and "ones"

as can be used to describe some action or say comparison, so acc to me "as" is the appropriate word here.

Ones is usually used to objects, say"apples on the basket are sweet, while the ones on the table are sour!(My generic idea about the usage of "ones" is this)

Hence, A B C

It is "the physical properties" that control the body and not "the body orientation"

C gives a clear though process!